Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities
Net Income	$ 10,053	$ 8,191
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	8,269	8,156
Employee retirement benefits	354	751
Deferred income taxes	1,812	1,237
Provision for uncollectible accounts	507	521
Equity in earnings of unconsolidated businesses, net of dividends received	(95)	(149)
Changes in current assets and liabilities, net of effects from acquisition/disposition of businesses	(1,660)	(1,136)
Other, net	(2,092)	(2,300)
Net cash provided by operating activities	17,148	15,271
Cash Flows from Investing Activities
Capital expenditures (including capitalized software)	(7,616)	(7,430)
Acquisitions of investments and businesses, net of cash acquired	(76)	(203)
Acquisitions of wireless licenses, net	(264)	(33)
Net change in short-term investments	(21)	21
Other, net	142	61
Net cash used in investing activities	(7,835)	(7,584)
Cash Flows from Financing Activities
Proceeds from long-term borrowings	499
Repayments of long-term borrowings and capital lease obligations	(2,330)	(1,891)
Decrease in short-term obligations, excluding current maturities	(432)	(887)
Dividends paid	(2,946)	(2,587)
Proceeds from sale of common stock	74	210
Purchase of common stock for treasury	(153)
Special distribution to noncontrolling interest	(3,150)	(4,500)
Other, net	(2,180)	(1,393)
Net cash used in financing activities	(10,618)	(11,048)
Decrease in cash and cash equivalents	(1,305)	(3,361)
Cash and cash equivalents, beginning of period	3,093	13,362
Cash and cash equivalents, end of period	$ 1,788	$ 10,001