Introduction and Overview

We are the largest cable operator in the United States and offer a variety of consumer entertainment and communication products and services. As of December 31, 2006, our cable systems served approximately 23.4 million video subscribers, 11 million high-speed Internet subscribers and 2.4 million phone subscribers and passed approximately 45.7 million homes in 39 states and the District of Columbia.

We classify our operations in two reportable segments: Cable and Programming. Our Cable segment, which generates approximately 95% of our consolidated revenues, manages and operates our cable systems. Our Programming segment consists of our six national programming networks. During 2006, our operations generated consolidated revenues of approximately $25 billion.

Our Cable segment earns revenues primarily through subscriptions to our video, high-speed Internet and phone services ("cable services"). Our video revenues continue to increase as a result of digital subscriber growth and demand for our other digital cable services, including video on demand, which we refer to as ON DEMAND, Digital Video Recorder ("DVR") and High Definition Television ("HDTV"), as well as higher pricing on our basic video service. As of December 31, 2006, approximately 51% of the homes in the areas we serve subscribed to our video service and approximately 52% of those video subscribers subscribed to at least one of our digital cable services. Our high-speed Internet service with Internet access at downstream speeds from 6Mbps to 16Mbps, depending on the level of service selected, has been one of our fastest growing services over the past several years. As of December 31, 2006, approximately 25% of the homes in the areas we serve subscribed to our high-speed Internet service. Comcast Digital Voice, our phone service that provides unlimited local and domestic long-distance calling and other features, is our most recent cable service offering. As of December 31, 2006, approximately 6% of the homes in the areas we serve subscribed to Comcast Digital Voice. In 2006, we began offering our video, high-speed Internet and Comcast Digital Voice services in a package that we refer to as the "triple play." In addition to cable services, other Cable segment revenue sources include advertising and the operation of our regional sports and news networks.

Our Programming segment consists of our consolidated national programming networks: E!, Style, The Golf Channel, VERSUS (formerly known as OLN), G4 and AZN Television. Revenue from our Programming segment is earned primarily from advertising revenues and from monthly per subscriber license fees paid by cable and satellite distributors.

Our other business interests include Comcast Spectacor, which owns the Philadelphia Flyers, the Philadelphia 76ers and two large multipurpose arenas in Philadelphia, and manages other facilities for sporting events, concerts and other events. Comcast Spectacor and all other consolidated businesses not included in our Cable or Programming segments are included in "Corporate and Other" activities.

On January 31, 2007, our Board of Directors approved a three-for-two stock split in the form of a 50% stock dividend (the "Stock Split") payable on February 21, 2007, to shareholders of record on February 14, 2007. The number of shares outstanding and related amounts have been adjusted to reflect the Stock Split for all periods presented.

2006 Financial and Operational Highlights

  • consolidated revenue growth of 18.5% and consolidated operating income growth of 31.2%, both driven by results in our Cable segment
  • Cable segment revenue growth of 20.6% and growth in operating income before depreciation and amortization of 22.1%, both driven by revenue generating units ("RGUs") growth and the success of our triple play offering, as well as growth from acquisitions

2006 Business Developments

  • completed transactions with Adelphia and Time Warner that resulted in a net increase of 1.7 million video subscribers, a net cash payment by us of approximately $1.5 billion and the disposition of our ownership interest in Time Warner Cable Inc. ("TWC") and Time Warner Entertainment Company, L.P. ("TWE"), the assets of two cable system partnerships and the transfer of our previously owned cable systems in Los Angeles, Cleveland and Dallas. We collectively refer to these transactions as the "Adelphia and Time Warner transactions."
  • initiated the dissolution of the Texas and Kansas City Cable Partnership ("TKCCP") that resulted in our acquisition of cable systems serving Houston, Texas (approximately 700,000 video subscribers) in January 2007
  • acquired the cable systems of Susquehanna Communications serving approximately 200,000 video subscribers for approximately $775 million
  • acquired the 39.5% interest in E! Entertainment Television (which operates the E! and Style programming networks) that we did not already own for approximately $1.2 billion
  • participated in a consortium of investors ("SpectrumCo") that acquired wireless spectrum licenses covering approximately 91% of the population in the United States for approximately $2.4 billion (our portion was $1.3 billion)
  • repurchased approximately 113 million shares (adjusted to reflect the Stock Split) of our Class A Special common stock pursuant to our Board-authorized share repurchase program for approximately $2.3 billion

Refer to Note 5 to our consolidated financial statements for information about acquisitions and other significant events.

The Areas We Serve

The map below highlights our 40 major markets with emphasis on our operations in the top 25 U.S. TV markets. Approximately 90% of our video subscribers are in the markets listed (subscribers in thousands).

The following provides further details of our highlights and insights into our consolidated financial statements, including discussion of our results of operations and our liquidity and capital resources. As a result of transferring our previously owned cable systems located in Los Angeles, Cleveland and Dallas ("Comcast Exchange Systems"), the operating results of the Comcast Exchange Systems are reported as discontinued operations for all periods presented.

Consolidated Operating Results

Year Ended December 31 (in millions) 2006 2005 2004 % Change
2005 to 2006
% Change
2004 to 2005
Revenues $ 24,966 $ 21,075 $ 19,221 18.5% 9.6%
Costs and Expenses
Operating, Selling, General and Administrative (excluding depreciation) 15,524 13,003 12,041 19.4 8.0
Depreciation 3,828 3,413 3,197 12.2 6.8
Amortization 995 1,138 1,154 (12.5) (1.5)
Operating Income 4,619 3,521 2,829 31.2 24.4
Other Income (Expense) Items, net (1,025) (1,801) (1,086) (43.1) 65.8
Income from Continuing Operations before Income Taxes
and Minority Interest
3,594 1,720 1,743 109.0 (1.4)
Income Tax Expense (1,347) (873) (801) 54.3 9.0
Income from Continuing Operations before Minority Interest 2,247 847 942 165.5 (10.2)
Minority Interest (12) (19) (14) (36.8) 35.7
Income from Continuing Operations 2,235 828 928 169.9 (10.8)
Discontinued Operations, net of Tax 298 100 42 198.0 138.1
Net Income $ 2,533 $ 928 $ 970 173.0% (4.3)%

All percentages are calculated based on actual amounts. Minor differences may exist due to rounding.

Consolidated Revenues

Our Cable and Programming segments accounted for substantially all of the increases in consolidated revenues for 2006 and 2005. Cable segment and Programming segment revenues are discussed separately below. The remaining changes relate to our other business activities, primarily Comcast Spectacor, whose revenues were negatively affected in 2005 by the National Hockey League ("NHL") lockout.

Consolidated Operating, Selling, General and Administrative Expenses

Our Cable and Programming segments accounted for substantially all of the increases in consolidated operating, selling, general and administrative expenses for 2006 and 2005. Cable segment and Programming segment expenses are discussed separately below. The remaining changes relate to our other business activities, primarily Comcast Spectacor, and the impact of adopting Statement of Financial Accounting Standards ("SFAS") No. 123R, "Share-Based Payment" ("SFAS No. 123R").

Effective January 1, 2006, we adopted SFAS No. 123R using the Modified Prospective Approach. SFAS No. 123R revises SFAS No. 123, "Accounting for Stock-Based Compensation" ("SFAS No. 123") and supersedes Accounting Principles Board ("APB") Opinion No. 25, "Accounting for Stock Issued to Employees" ("APB No. 25"). SFAS No. 123R requires the cost of all share-based payments to employees, including grants of employee stock options, to be recognized in the financial statements based on their fair values at grant date, or the date of later modification, over the requisite service period. In addition, SFAS No. 123R requires unrecognized cost (based on the amounts previously disclosed in our pro forma footnote disclosure) related to options vesting after the date of initial adoption to be recognized in the financial statements over the remaining requisite service period.

The incremental pretax share-based compensation expense recognized because of the adoption of SFAS No. 123R for the year ended December 31, 2006, was $126 million. Total share-based compensation expense recognized under SFAS No. 123R, including the incremental pretax share-based compensation expense, was $190 million for the year ended December 31, 2006. Share-based compensation expense is reflected in the operating results of each of our business segments. Refer to Note 10 and Note 14 to our consolidated financial statements for further details on our adoption of SFAS No. 123R.

Consolidated Depreciation and Amortization

The increases in depreciation expense for 2006 and 2005 are primarily a result of capital expenditures in our Cable segment and, in 2006, the depreciation associated with acquisitions of cable systems.

The decreases in amortization expense for 2006 and 2005 are primarily a result of decreases in the amortization of our franchise-related customer relationship intangible assets, partially offset by increased amortization expense related to software-related intangibles acquired in various transactions, and in 2006, the customer relationship intangible assets recorded in connection with the acquisitions of cable systems.

Segment Operating Results

Certain adjustments have been made in our segment presentation to be consistent with our management reporting presentation. These adjustments primarily relate to the adoption of SFAS No. 123R and are further discussed in Note 14 to our consolidated financial statements.

To measure the performance of our operating segments, we use operating income before depreciation and amortization, excluding impairment charges related to fixed and intangible assets, and gains or losses from the sale of assets, if any. This measure eliminates the significant level of noncash depreciation and amortization expense that results from the capital-intensive nature of our businesses and from intangible assets recognized in business combinations. It is also unaffected by our capital structure or investment activities. We use this measure to evaluate our consolidated operating performance, the operating performance of our operating segments, and to allocate resources and capital to our operating segments. It is also a significant performance measure in our annual incentive compensation programs. We believe that this measure is useful to investors because it is one of the bases for comparing our operating performance with other companies in our industries, although our measure may not be directly comparable to similar measures used by other companies. Because we use this metric to measure our segment profit or loss, we reconcile it to operating income, the most directly comparable financial measure calculated and presented in accordance with generally accepted accounting principles in the United States ("GAAP") in the business segment footnote to our consolidated financial statements. You should not consider this measure a substitute for operating income (loss), net income (loss), net cash provided by operating activities, or other measures of performance or liquidity we have reported in accordance with GAAP.

Cable Segment Overview

Our cable systems simultaneously deliver video, high-speed Internet and phone services to our subscribers. The majority of our Cable segment revenue is earned from subscriptions to these cable services. Subscribers typically pay us monthly, based on their chosen level of service, number of services and the type of equipment they use, and generally may discontinue service at any time. We measure our success in selling subscription-based services to customers by a metric referred to as a revenue generating unit ("RGU"). Each individual cable service (basic cable, digital cable, high-speed Internet or phone service) that a subscriber receives represents one RGU. As of December 31, 2006, we had approximately 50.8 million RGUs. As a result of continued and growing demand for our existing and new products and services, including our triple play offering, as well as other factors discussed below, we have increased our revenues and operating income before depreciation and amortization.

Cable Segment Results of Operations

The comparability of the results of operations and subscriber information of our Cable segment are impacted by the Adelphia and Time Warner transactions (closed July 31, 2006) and the acquisition of the cable systems of Susquehanna Communications (closed April 30, 2006). Further, consistent with our management reporting presentation, the operating results and subscriber information of the cable systems serving Houston, Texas have been included in the Cable segment beginning August 1, 2006. However, the operating results of the Houston cable systems are eliminated in our consolidated financial statements as TKCCP continued to be accounted for as an equity method investment for external financial reporting purposes until the Houston cable systems were actually acquired on January 1, 2007 (see Note 5). We collectively refer to these cable systems as the "newly acquired cable systems." The newly acquired cable systems accounted for $1.7 billion of increased revenue in 2006.

Cable Segment Revenues

Video. We offer a full range of video services, ranging from a limited basic service and a digital starter service, to our full digital cable service, which provides access to over 250 channels, including premium and pay-per-view channels; ON DEMAND (which allows access to a library of movies, sports and news, starting a selection at any time, and pausing, rewinding and fast-forwarding selections); music channels; and an interactive, on-screen program guide (which allows navigating the channel lineup and ON DEMAND library). Digital cable subscribers may also subscribe to additional digital cable services, including DVR (which allows digital recording of programs, and pausing and rewinding of live television), and HDTV (which provides multiple channels in high definition).

As of December 31, 2006, approximately 52% of our video subscribers subscribed to at least one of our digital cable services, compared to approximately 45% and approximately 39% as of December 31, 2005 and 2004, respectively.

Year Ended December 31 (in millions) 2006 2005 2004 % Change
2005 to 2006
% Change
2004 to 2005
Video $ 15,096 $ 12,918 $ 12,211 16.9% 5.8%
High-speed Internet 4,986 3,757 2,938 32.7 27.9
Phone 913 617 620 48.0 (0.5)
Advertising 1,537 1,272 1,206 20.8 5.4
Other 851 789 654 7.8 20.7
Franchise fees 717 634 601 13.1 5.3
Revenues 24,100 19,987 18,230 20.6 9.6
Operating expenses 8,600 7,041 6,656 22.1 5.8
Selling, general and administrative expenses 5,796 4,999 4,634 15.9 7.8
Operating income before depreciation and amortization $ 9,704 $ 7,947 $ 6,940 22.1% 14.5%

Revenues increased as a result of higher pricing on our basic video service, growth in our digital cable services and, in 2006, the addition of our newly acquired cable systems. Our newly acquired cable systems added approximately 3.7 million video subscribers and contributed $1.143 billion of our video revenue growth for the year ended December 31, 2006. As a result of these factors, our average monthly video revenue per video subscriber increased from $50 in 2004 to $57 in 2006.

High-Speed Internet. We offer high-speed Internet service with Internet access at downstream speeds from 6Mbps to 16Mbps, depending on the level of service selected. This service also includes our interactive portal, Comcast.net, which provides multiple e-mail addresses and online storage, as well as a variety of proprietary content and value-added features and enhancements that are designed to take advantage of the speed of the Internet service we provide.

Revenues increased in 2006 and 2005 as a result of subscriber growth and, in 2006, the addition of our newly acquired cable systems. As of December 31, 2006, 24.5% of our homes passed subscribed to our high-speed Internet service, compared to 21.1% and 17.8% as of December 31, 2005 and 2004, respectively. Our newly acquired cable systems added approximately 1.7 million high-speed Internet subscribers and contributed $379 million of our high-speed Internet revenue growth for the year ended December 31, 2006. Average monthly revenue per high-speed Internet subscriber has remained relatively stable between $42 and $43 from 2004 through 2006. The rate of subscriber and revenue growth may slow as the market continues to mature and competition increases.

Phone. We offer Comcast Digital Voice, our IP-enabled phone service that provides unlimited local and domestic long-distance calling and includes such features as Voice Mail, Caller ID and Call Waiting. Comcast Digital Voice was available to 32 million homes as of December 31, 2006. We expect that by the end of 2007 approximately 85% of our homes passed will have access to Comcast Digital Voice. In some areas, we provide our circuit-switched local phone service. Subscribers to this service have access to a full array of calling features and third-party long-distance services.

Revenues increased in 2006 as a result of the increase in Comcast Digital Voice subscribers, partially offset by the loss of approximately 300,000 circuit-switched subscribers. Our newly acquired cable systems added approximately 156,000 phone subscribers and contributed $40 million of our phone revenue growth for the year ended December 31, 2006. The decrease in phone revenues in 2005 from 2004 was primarily the result of a reduction in the number of circuit-switched phone subscribers as we began the deployment of Comcast Digital Voice. We expect the number of phone subscribers will grow as we expand Comcast Digital Voice to new markets in 2007. We expect the number of subscribers to our circuit-switched local phone service to continue to decrease in 2007 as our marketing efforts are now focused on Comcast Digital Voice.

Advertising. As part of our programming license agreements with programming networks, we receive an allocation of scheduled advertising time that we may sell to local, regional and national advertisers. We also coordinate the advertising sales efforts of other cable operators in some markets, and in other markets we have formed and operate advertising interconnects, which establish a physical, direct link between multiple cable systems and provide for the sale of regional and national advertising across larger geographic areas than could be provided by a single cable operator.

Advertising revenues increased in 2006 as a result of the strong growth in political advertising and the addition of our newly acquired cable systems. We expect slower growth in our advertising revenues in 2007, primarily as a result of lower levels of political advertising.

Other. We also generate revenues from our regional sports and news networks, video installation services, commissions from third-party electronic retailing, and fees for other services, such as providing businesses with data connectivity and networked applications. Our regional sports and news networks include Comcast SportsNet (Philadelphia), Comcast SportsNet Mid-Atlantic (Baltimore/Washington), Cable Sports Southeast, CN8 — The Comcast Network, Comcast SportsNet Chicago, Comcast SportsNet West (Sacramento) and MountainWest Sports Network. These networks earn revenue through the sale of advertising time and receive programming license fees paid by cable and satellite distributors.

Franchise Fees. Our franchise fee revenues represent the pass-through to our subscribers of the fees required to be paid to state and local franchising authorities. Under the terms of our franchise agreements, we are generally required to pay up to 5% of our gross video revenues to the local franchising authority. The increases in franchise fees are primarily a result of the increases in our revenues upon which the fees apply.

Total Cable Segment Revenue. As a result of the growth in revenues from our products and services, we have been able to increase our total average monthly revenue per video subscriber (including all revenue sources) from approximately $77 in 2004 to approximately $95 in 2006.

Cable Segment Expenses

We continue to focus on controlling the growth of expenses. Our operating margins (operating income before depreciation and amortization as a percentage of revenue) were 40.2%, 39.8% and 38.1% for the years ended December 31, 2006, 2005 and 2004, respectively.

Cable Segment Operating Expenses. Cable programming expenses, our largest expense, are the fees we pay to programming networks to license the programming we package, offer and distribute to our cable subscribers. These expenses are affected by changes in the rates charged by programming networks, the number of subscribers and the programming options we offer to subscribers. Cable programming expenses increased to $4.9 billion in 2006 as a result of increases in rates and the newly acquired cable systems, from $4.1 billion in 2005 and $3.9 billion in 2004. We anticipate our cable programming expenses will increase in the future, as the fees charged by programming networks increase and as we provide additional channels and ON DEMAND programming options to our subscribers. We anticipate that these increases may be mitigated to some extent by volume discounts.

Other operating expenses increased to $3.7 billion in 2006 from $2.9 billion in 2005 and $2.8 billion in 2004. In 2006, our newly acquired cable systems contributed approximately $650 million of our increases in other operating expenses. The remaining increases in 2006 were primarily a result of growth in the number of subscribers to our cable services, which required additional personnel to handle service calls and provide customer support, and costs associated with the delivery of these services. The increase in 2005 was primarily a result of increases in our technical services group due to the launch of Comcast Digital Voice, the deployment of digital simulcasting, the implementation of a new provisioning system and, to a lesser degree, the repair of our cable systems as a result of weather-related damage.

Cable Segment Selling, General and Administrative Expenses. Selling, general and administrative expenses increased $797 million to $5.8 billion in 2006. In 2006, our newly acquired cable systems contributed approximately $400 million of our increases in selling, general and administrative expenses. The remaining increases in 2006 were primarily a result of growth in the number of subscribers to our cable services, which required additional employees to handle customer service, marketing and other administrative costs. The increase in 2005 was primarily a result of the launch of Comcast Digital Voice, the deployment of digital simulcasting and the implementation of a new provisioning system.

Programming Segment Overview

Our Programming segment consists of our consolidated national programming networks:

Programming Network Approximate
U.S. Subscribers
(in millions)
Description
E! 81 Pop culture and entertainment-related programming
Style 37 Lifestyle-related programming
The Golf Channel 63 Golf and golf-related programming
VERSUS 61 Sports and leisure programming
G4 53 Gamer lifestyle programming
AZN Television 14 Asian American programming

We also own interests in MGM (20%), iN DEMAND (54%), TV One (33%), PBS KIDS Sprout (40%), FEARnet (33%) and ExerciseTV (55%). The operating results of these entities are not included in our Programming segment's operating results as they are presented in equity in net (losses) income of affiliates, net or Corporate and Other activities.

Programming Segment Results of Operations

Year Ended December 31 (in millions) 2006 2005 2004 % Change
2005 to 2006
% Change
2004 to 2005
Revenues $ 1,053 $ 919 $ 787 14.6% 16.7%
Operating, selling, general and administrative expenses 812 647 518 25.6 24.7
Operating income before depreciation and amortization $ 241 $ 272 $ 269 (11.4)% 1.3%

Programming Segment Revenues

Revenues from our Programming segment are earned primarily from the sale of advertising time and from monthly per subscriber license fees paid by cable and satellite distributors. Programming revenues for 2006 and 2005 increased as a result of increases in advertising and license fee revenues. For 2006, 2005 and 2004, approximately 11% to 12% of our Programming segment revenues were generated from our Cable segment and are eliminated in our consolidated financial statements, but are included in the amounts presented above.

Programming Segment Operating, Selling, General and Administrative Expenses

Operating, selling, general and administrative expenses consist mainly of the cost of producing television programs and live events, the purchase of programming rights, marketing and promoting our programming networks, and administrative costs. Programming expenses for 2006 and 2005 increased as a result of an increase in production and programming rights costs for new and live event programming for our programming networks, including the NHL on VERSUS, and a corresponding increase in marketing expenses for this programming. The full-year impact of our 2004 acquisitions of TechTV and AZN Television also contributed to the growth in 2005 expenses. We have and expect to continue to invest in new and live event programming, such as our recent rights agreement with the PGA TOUR, that will cause our Programming segment expenses to increase in the future.

Consolidated Other Income (Expense) Items

Year Ended December 31 (in millions) 2006 2005 2004
Interest expense $ (2,064) $ (1,795) $ (1,874)
Investment income (loss), net 990 89 472
Equity in net (losses) income of affiliates, net (124) (42) (81)
Other income (expense) 173 (53) 397
Total $ (1,025) $ (1,801) $ (1,086)

Interest Expense

The increase in interest expense for 2006 from 2005 was primarily the result of an increase in our average debt outstanding and higher interest rates on our variable-rate debt, as well as $57 million of gains recognized in 2005 in connection with the early extinguishment of some of our debt facilities. The decrease in interest expense for 2005 from 2004 was primarily the result of $57 million of gains recognized in 2005 and $69 million of losses recognized in 2004 in connection with the early extinguishment of some of our debt facilities, partially offset by the effects of higher interest rates on variable-rate debt in 2005.

Investment Income (Loss), Net

The components of investment income (loss), net for 2006, 2005 and 2004 are presented in a table in Note 6 to our consolidated financial statements. In connection with the Adelphia and Time Warner transactions, we recognized gains of approximately $646 million for the year ended December 31, 2006.

We have entered into derivative financial instruments that we account for at fair value and which economically hedge the market price fluctuations in the common stock of substantially all of our investments accounted for as trading securities. The differences between the unrealized gains (losses) on trading securities and the mark to market adjustments on derivatives related to trading securities, as presented in the table in Note 6, result from one or more of the following:

  • we did not maintain an economic hedge for our entire investment in the security during some or all of the period
  • there were changes in the derivative valuation assumptions such as interest rates, volatility and dividend policy
  • the magnitude of the difference between the market price of the underlying security to which the derivative relates and the strike price of the derivative
  • the change in the time value component of the derivative value during the period
  • the security to which the derivative relates changed due to a corporate reorganization of the issuing company to a security with a different volatility rate

Equity in Net (Losses) Income of Affiliates, Net

The increase in equity in net losses of affiliates for 2006 from 2005 was primarily a result of other-than-temporary impairment charges recognized in 2006. The decrease in equity in net losses of affiliates for 2005 from 2004 was primarily a result of changes in the net income or loss of our equity investees.

Other Income (Expense)

Other income for 2006 consisted principally of $170 million of gains on the sales of investment assets. Other expense for 2005 consisted principally of a $170 million payment representing our share of the settlement amount related to certain of AT&T's litigation with At Home, partially offset by a $24 million gain on the exchange of one of our equity method investments and $62 million of gains recognized on the sale or restructuring of investment assets in 2005. Other income for 2004 consisted principally of the $250 million reduction in the estimated fair value liability associated with the securities litigation of an acquired company and the $94 million gain recognized on the sale of our investment in DHC Ventures, LLC ("Discovery Health Channel").

Income Tax Expense

Our effective income tax rate was 37.5%, 50.7% and 45.9% for 2006, 2005 and 2004, respectively. Tax expense reflects an effective income tax rate that differs from the federal statutory rate primarily as a result of state income taxes and adjustments to prior year accruals, including related interest. Adjustments to prior year accruals in 2006 are principally related to the favorable resolution of issues and revised estimates of the outcome of unresolved issues with various taxing authorities.

Discontinued Operations

The operating results of our previously owned cable systems located in Los Angeles, Dallas and Cleveland, reported as discontinued operations for 2006, include seven months of operations, as the closing date of the transaction was July 31, 2006. For 2005 and 2004, results include 12 months of operations. As a result of the exchange transaction, we recognized a gain on the sale of these systems of $195 million, net of tax of $541 million (see Note 5). The effective tax rate on the gain is higher than the federal statutory rate primarily as a result of the nondeductible amounts attributed to goodwill.

Liquidity and Capital Resources

As we describe further below, our businesses generate significant cash flow from operating activities. The proceeds from monetizing our nonstrategic investments have also provided us with a significant source of cash flow. We believe that we will be able to meet our current and long-term liquidity and capital requirements, including fixed charges, through our cash flow from operating activities, existing cash, cash equivalents and investments; through available borrowings under our existing credit facilities; and through our ability to obtain future external financing. We anticipate continuing to use a substantial portion of our cash flow to fund our capital expenditures, invest in business opportunities and repurchase our stock.

Operating Activities

Net cash provided by operating activities amounted to $6.618 billion for 2006, primarily as a result of our operating income before depreciation and amortization, the timing of interest and income tax payments, and changes in other operating assets and liabilities.

Financing Activities

Net cash provided by financing activities was $3.546 billion for 2006, and consisted principally of our proceeds from borrowings of $7.497 billion, partially offset by our debt repayments of $2.039 billion, and our repurchase of approximately 113 million shares of our Class A Special common stock at a weighted-average share price of $20.76 for $2.347 billion (recognized on a settlement date or cash basis and adjusted to reflect the Stock Split). We have made, and may from time to time in the future make, optional repayments on our debt obligations, which may include repurchases of our outstanding public notes and debentures, depending on various factors, such as market conditions. See Note 8 to our consolidated financial statements for further discussion of our financing activities, including details of our debt repayments and borrowings.

Available Borrowings Under Credit Facilities

We traditionally maintain significant availability under lines of credit and our commercial paper program to meet our short-term liquidity requirements. As of December 31, 2006, amounts available under these facilities totaled $4.464 billion.

Debt Covenants

We and our cable subsidiaries that have provided guarantees (see Note 8) are subject to the covenants and restrictions set forth in the indentures governing our public debt securities and in the credit agreement governing our bank credit facilities. We and the guarantors are in compliance with the covenants, and we believe that neither the covenants nor the restrictions in our indentures or loan documents will limit our ability to operate our business or raise additional capital. Our covenants are tested on an ongoing basis. The only financial covenant in our $5.0 billion revolving credit facility relates to leverage (ratio of debt to operating income before depreciation and amortization), which we met by a significant margin as of December 31, 2006. Our ability to comply with this financial covenant in the future does not depend on further debt reduction or on improved operating results.

Share Repurchase Program

As of December 31, 2006, the maximum dollar value of shares remaining that may be repurchased under our Board-authorized share repurchase program was approximately $3 billion. We expect such repurchases to continue from time to time in the open market or in private transactions, subject to market conditions.

Investing Activities

Net cash used in investing activities was $9.872 billion for 2006 and consists principally of cash paid for acquisitions of $5.110 billion (primarily related to the Adelphia transaction, Susquehanna Communications acquisition and the acquisition of our additional interest in E! Entertainment Television), capital expenditures of $4.395 billion, and investments of $2.812 billion (primarily related to our interest in SpectrumCo and the additional funding related to the dissolution of TKCCP). These cash outflows were partially offset by proceeds from sales, settlements and restructuring of investments of $2.720 billion (primarily related to our disposition of our ownership interest in TWE and TWC).

Refer to Notes 5, 6 and 7 to our consolidated financial statements for a discussion of our acquisitions and other significant events, investments, and our intangible assets, respectively.

Capital Expenditures

Our most significant recurring investing activity has been capital expenditures, and we expect that this will continue in the future. The following chart illustrates the capital expenditures we incurred in our Cable segment from 2004 through 2006:

In 2006, approximately 75% of Cable capital expenditures were variable and directly associated with continued and growing demand for our existing and new products and services, which leads to increases in RGUs. The amounts of capital expenditures in our Programming segment and our other business activities have not been significant and have been relatively stable from 2004 through 2006. The amounts of our capital expenditures for 2007 and for subsequent years will depend on numerous factors, including acquisitions, competition, changes in technology and the timing and rate of deployment of new services.

Interest Rate Risk Management

We maintain a mix of fixed and variable-rate debt. Approximately 94% of our total debt of $28.975 billion is at fixed rates with the remaining at variable rates. We are exposed to the market risk of adverse changes in interest rates. In order to manage the cost and volatility relating to the interest cost of our outstanding debt, we enter into various interest rate risk management derivative transactions pursuant to our policies.

We monitor our interest rate risk exposures using techniques that include market value and sensitivity analyses. We do not hold or issue any derivative financial instruments for speculative purposes and we are not a party to any leveraged derivative instruments.

We manage the credit risks associated with our derivative financial instruments through the evaluation and monitoring of the creditworthiness of the counterparties. Although we may be exposed to losses in the event of nonperformance by the counterparties, we do not expect such losses, if any, to be significant.

Our interest rate derivative financial instruments, which can include swaps, rate locks, caps and collars, represent an integral part of our interest rate risk management program. Our interest rate derivative financial instruments reduced the portion of our total debt at fixed rates from 94% to 83% as of December 31, 2006. The effect of our interest rate derivative financial instruments increased our interest expense by approximately $39 million in 2006, and decreased our interest expense by approximately $16 million and $66 million in 2005 and 2004, respectively. Interest rate risk management instruments may have a significant effect on our interest expense in the future.

The table set forth below summarizes the fair values and contract terms of financial instruments subject to interest rate risk maintained by us as of December 31, 2006:

(in millions) 2007 2008 2009 2010 2011 Thereafter Total Fair Value
12/31/06
Debt
Fixed-Rate $ 908 $ 1,474 $ 990 $ 1,109 $ 1,741 $ 20,982 $ 27,204 $ 28,923
Average Interest Rate 8.3% 7.3% 7.5% 5.7% 6.4% 7.2% 7.2%  
Variable-Rate $ 75 $ 194 $ 1,259 $ 211 $ 26 $ 6 $ 1,771 $ 1,771
Average Interest Rate 5.8% 5.5% 5.3% 5.1% 5.9% 6.8% 5.3%  
Interest Rate Instruments(a)
Fixed to Variable Swaps $ — $ 600 $ 750 $ 200 $ 750 $ 900 $ 3,200 $ (103)
Average Pay Rate —% 7.2% 7.0% 6.1% 6.1% 5.4% 6.3%  
Average Receive Rate —% 6.2% 6.9% 5.9% 5.5% 5.3% 5.9%  

(a) We did not have any variable to fixed swaps as of December 31, 2006.

We use the notional amounts on the instruments to calculate the interest to be paid or received. The notional amounts do not represent the amount of our exposure to credit loss. The estimated fair value approximates the payments necessary to settle the outstanding contracts. We estimate interest rates on variable debt using the average implied forward London Interbank Offered Rate ("LIBOR") rates for the year of maturity based on the yield curve in effect on December 31, 2006, plus the applicable margin in effect on December 31, 2006. We estimate the floating rates on our swaps using the average implied forward LIBOR for the year of maturity based on the yield curve in effect on December 31, 2006.

As a matter of practice, we typically do not structure our financial contracts to include credit-ratings-based triggers that could affect our liquidity. In the ordinary course of business, some of our swaps could be subject to termination provisions if we do not maintain investment grade credit ratings. As of December 31, 2006, and 2005, the estimated fair value of those swaps was a liability of $60 million and $69 million, respectively. The amount to be paid or received upon termination, if any, would be based upon the fair value of those outstanding contracts at that time.

Equity Price Risk Management

We are exposed to the market risk of changes in the equity prices of our investments in marketable securities. We enter into various derivative transactions pursuant to our policies to manage the volatility relating to these exposures.

Through market value and sensitivity analyses, we monitor our equity price risk exposures to ensure that the instruments are matched with the underlying assets or liabilities, reduce our risks relating to equity prices and maintain a high correlation to the risk inherent in the hedged item.

To limit our exposure to and benefits from price fluctuations in the common stock of some of our investments, we use equity derivative financial instruments. These derivative financial instruments include equity collar agreements, prepaid forward sales agreements and indexed or exchangeable debt instruments and are accounted for at fair value.

Except as described in "Investment Income (Loss), Net" (see above), the changes in the fair value of our investments that we accounted for as trading securities were substantially offset by the changes in the fair values of the equity derivative financial instruments.

Refer to Note 2 to our consolidated financial statements for a discussion of our accounting policies for derivative financial instruments and to Note 6 and Note 8 to our consolidated financial statements for discussions of our derivative financial instruments.

Contractual Obligations

Our unconditional contractual obligations as of December 31, 2006, which consist primarily of our debt obligations and their amounts in future periods, are summarized in the following table:

Payments Due By Period
(in millions) Total Year 1 Years
2-3
Years
4-5
More
than 5
Debt obligations(a) $ 28,909 $ 962 $ 3,900 $ 3,079 $ 20,968
Capital lease obligations 66 21 17 8 20
Operating lease obligations 1,614 292 491 253 578
Purchase obligations(b) 12,068 3,809 3,056 2,150 3,053
Other long-term liabilities reflected on the balance sheet:
Acquisition-related obligations(c) 364 271 75 11 7
Other long-term obligations(d) 4,361 283 449 207 3,422
Total $ 47,382 $ 5,638 $ 7,989 $ 5,707 $ 28,048
Refer to Note 8 (long-term debt) and Note 13 (commitments) to our consolidated financial statements.

(a) Excludes interest payments.

(b) Purchase obligations consist of agreements to purchase goods and services that are legally binding on us and specify all significant terms, including fixed or minimum quantities to be purchased and price provisions. Our purchase obligations primarily relate to our Cable segment, including contracts with programming networks, customer premise equipment manufacturers, communication vendors, other cable operators for which we provide advertising sales representation, and other contracts entered into in the normal course of business. We also have purchase obligations through Comcast Spectacor for the players and coaches of our professional sports teams. We did not include contracts with immaterial future commitments.

(c) Acquisition-related obligations consist primarily of costs related to terminated employees, costs relating to exiting contractual obligations, and other assumed contractual obligations of the acquired entity.

(d) Other long-term obligations consist primarily of our prepaid forward sales transactions of equity securities we hold, subsidiary preferred shares, deferred compensation obligations, pension, postretirement and postemployment benefit obligations, and programming rights payable under license agreements.

Off-Balance Sheet Arrangements

We do not have any significant off-balance sheet arrangements that are reasonably likely to have a current or future effect on our financial condition, results of operations, liquidity, capital expenditures or capital resources.

Critical Accounting Judgments and Estimates

The preparation of our financial statements requires us to make estimates that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and contingent liabilities. We base our judgments on historical experience and on various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making estimates about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

We believe our judgments and related estimates associated with the valuation and impairment testing of our cable franchise rights and the accounting for income taxes and legal contingencies are critical in the preparation of our financial statements. Management has discussed the development and selection of these critical accounting judgments and estimates with the Audit Committee of our Board of Directors, and the Audit Committee has reviewed our disclosures relating to them presented below.

Refer to Note 2 to our consolidated financial statements for a discussion of our accounting policies with respect to these and other items.

Valuation and Impairment Testing of Cable Franchise Rights

Our largest asset, our cable franchise rights, results from agreements we have with state and local governments that allow us to construct and operate a cable business within a specified geographic area. The value of a franchise is derived from the economic benefits we receive from the right to solicit new subscribers and to market new services such as additional digital cable services, high-speed Internet and phone services in a particular service area. The amounts we record for cable franchise rights are primarily the result of cable system acquisitions. Typically when we acquire a cable system, the most significant asset we record is the value of the franchise intangible. Often these cable system acquisitions include multiple franchise areas. We currently serve approximately 6,000 franchise areas in the United States.

We have concluded that our cable franchise rights have an indefinite useful life since there are no legal, regulatory, contractual, competitive, economic or other factors which limit the period over which these rights will contribute to our cash flows. Accordingly, we do not amortize our cable franchise rights but assess the carrying value of our cable franchise rights annually, or more frequently whenever events or changes in circumstances indicate that the carrying amount may exceed its fair value (the "impairment test") in accordance with SFAS No. 142, "Goodwill and Other Intangible Assets."

If we determine the value of our cable franchise rights is less than the carrying amount, we recognize an impairment charge for the difference between the estimated fair value and the carrying value of the assets. For the purpose of our impairment testing, we have grouped the recorded values of our various cable franchise rights into geographic regions. We evaluate these groups periodically to ensure impairment testing is performed at an appropriate level. We estimate the fair value of our cable franchise rights primarily based on a discounted cash flow analysis that involves significant judgment in developing individual assumptions for each of the geographic regions, including long-term growth rate and discount rate assumptions. We have not recorded any significant impairment charges as a result of our impairment testing.

We could record impairment charges in the future if there are changes in market conditions, operating results, federal or state regulations, or groupings of the geographic regions in which we test for impairment, in any such case that prevent us from recovering the carrying value of these cable franchise rights. At our last impairment test date, the amounts by which the estimated fair value of our cable franchise rights exceeded the carrying value for our geographic regions ranged from zero to in excess of $2.0 billion. A 10% decline in the estimated fair value of the cable franchise rights for each of these regions would result in an impairment in three of these regions and an impairment charge of approximately $540 million.

Income Taxes

Our provision for income taxes is based on our current period income, changes in deferred income tax assets and liabilities, income tax rates and tax planning opportunities available in the jurisdictions in which we operate. From time to time, we engage in transactions in which the tax consequences may be subject to uncertainty. Examples of such transactions include business acquisitions and disposals, including like-kind exchanges of cable systems, issues related to consideration paid or received in connection with acquisitions, and certain financing transactions. Significant judgment is required in assessing and estimating the tax consequences of these transactions. We prepare and file tax returns based on our interpretation of tax laws and regulations, and we record estimates based on these judgments and interpretations.

In the normal course of business, our tax returns are subject to examination by various taxing authorities. Such examinations may result in future tax and interest assessments by these taxing authorities. We adjust our estimates periodically because of ongoing examinations by and settlements with the various taxing authorities, as well as changes in tax laws, regulations and precedent. The effects on our financial statements of income tax uncertainties that arise in connection with business combinations and those associated with entities acquired in business combinations are discussed in Note 2 to our consolidated financial statements. The consolidated tax provision of any given year includes adjustments to prior year income tax accruals that are considered appropriate and any related estimated interest. We believe that adequate accruals have been made for income taxes. Differences between the estimated and actual amounts determined upon ultimate resolution, individually or in the aggregate, are not expected to have a material adverse effect on our consolidated financial position, but could possibly be material to our consolidated results of operations or cash flow of any one period.

Legal Contingencies

We are subject to legal, regulatory and other proceedings and claims that arise in the ordinary course of our business and, in certain cases, those that we assume from an acquired entity in a business combination. We record an estimated liability for those proceedings and claims arising in the ordinary course of business based upon the probable and reasonably estimable criteria contained in SFAS No. 5, "Accounting for Contingencies." For those litigation contingencies assumed in a business combination, we record a liability based on estimated fair value when we can determine such fair value. We review outstanding claims with internal as well as external counsel to assess the probability and the estimates of loss. We reassess the risk of loss as new information becomes available, and we adjust liabilities as appropriate. The actual cost of resolving a claim may be substantially different from the amount of the liability recorded. Differences between the estimated and actual amounts determined upon ultimate resolution, individually or in the aggregate, are not expected to have a material adverse effect on our consolidated financial position, but could possibly be material to our consolidated results of operations or cash flow of any one period.