CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES
Net income	$ 1,414	$ 1,645
Adjustments for noncash and nonoperating items:
Depreciation	2,371	2,377
Amortization	95	79
Pretax gain on sale of investment in Clearwire	0	(64)
Income from equity-method investments, net of cash distributions	(9)	(433)
Deferred income taxes	353	409
Equity-based compensation expense	100	104
Excess tax benefit from equity-based compensation	(81)	(73)
Changes in operating assets and liabilities, net of acquisitions and dispositions:
Receivables	17	(31)
Accounts payable and other liabilities	(137)	105
Other changes	31	(3)
Cash provided by operating activities	4,154	4,115
INVESTING ACTIVITIES
Capital expenditures	(2,371)	(2,191)
Business acquisitions, net of cash acquired	0	(1,340)
Purchases of investments	(586)	(57)
Return of capital from investees	7	1,112
Proceeds from sale, maturity and collection of investments	476	0
Acquisition of intangible assets	(30)	(27)
Other investing activities	19	21
Cash used by investing activities	(2,485)	(2,482)
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	0	2,258
Repayments of long-term debt	(1,500)	(1,750)
Repayments of long-term debt assumed in acquisitions	0	(1,730)
Debt issuance costs	0	(25)
Redemption of mandatorily redeemable preferred equity	(300)	0
Repurchases of common stock	(1,856)	(1,287)
Dividends paid	(573)	(529)
Proceeds from exercise of stock options	124	124
Excess tax benefit from equity-based compensation	81	73
Taxes paid in cash in lieu of shares issued for equity-based compensation	(64)	(43)
Other financing activities	(9)	(48)
Cash used by financing activities	(4,097)	(2,957)
Decrease in cash and equivalents	(2,428)	(1,324)
Cash and equivalents at beginning of year	3,304	5,177
Cash and equivalents at end of year	$ 876	$ 3,853