Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities
Net Income	$ 15,631	$ 12,483
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	12,423	12,323
Employee retirement benefits	649	1,126
Deferred income taxes	3,011	1,665
Provision for uncollectible accounts	746	709
Equity in earnings of unconsolidated businesses, net of dividends received	(100)	(197)
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses	(1,078)	(197)
Other, net	(2,895)	(3,154)
Net cash provided by operating activities	28,387	24,758
Cash Flows from Investing Activities
Capital expenditures (including capitalized software)	(11,807)	(11,315)
Acquisitions of investments and businesses, net of cash acquired	(81)	(838)
Acquisitions of wireless licenses	(430)	(3,816)
Proceeds from dispositions of wireless licenses	2,111
Net change in short-term investments	(11)	28
Other, net	195	516
Net cash used in investing activities	(10,023)	(15,425)
Cash Flows from Financing Activities
Proceeds from long-term borrowings	49,166
Repayments of long-term borrowings and capital lease obligations	(2,392)	(2,878)
Increase (decrease) in short-term obligations, excluding current maturities	(324)	375
Dividends paid	(4,420)	(3,887)
Proceeds from sale of common stock	76	278
Purchase of common stock for treasury	(153)
Special distribution to noncontrolling interest	(3,150)	(4,500)
Other, net	(3,550)	(2,369)
Net cash provided by (used in) financing activities	35,253	(12,981)
Increase (decrease) in cash and cash equivalents	53,617	(3,648)
Cash and cash equivalents, beginning of period	3,093	13,362
Cash and cash equivalents, end of period	$ 56,710	$ 9,714