Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 56,710	$ 3,093
Short-term investments	631	470
Accounts receivable, net of allowances of $670 and $641	12,111	12,576
Inventories	1,193	1,075
Prepaid expenses and other	3,060	4,021
Total current assets	73,705	21,235
Plant, property and equipment	218,336	209,575
Less accumulated depreciation	129,809	120,933
Plant, property and equipment, net	88,527	88,642
Investments in unconsolidated businesses	3,423	3,401
Wireless licenses	76,503	77,744
Goodwill	24,339	24,139
Other intangible assets, net	5,732	5,933
Other assets	4,446	4,128
Total assets	276,675	225,222
Current liabilities
Debt maturing within one year	8,202	4,369
Accounts payable and accrued liabilities	15,622	16,182
Other	6,467	6,405
Total current liabilities	30,291	26,956
Long-term debt	90,938	47,618
Employee benefit obligations	33,738	34,346
Deferred income taxes	25,821	24,677
Other liabilities	5,622	6,092
Equity
Series preferred stock ($.10 par value; none issued)
Common stock ($.10 par value; 2,967,610,119 shares issued in both periods)	297	297
Contributed capital	37,918	37,990
Accumulated deficit	(1,768)	(3,734)
Accumulated other comprehensive income	2,118	2,235
Common stock in treasury, at cost	(3,970)	(4,071)
Deferred compensation - employee stock ownership plans and other	390	440
Noncontrolling interests	55,280	52,376
Total equity	90,265	85,533
Total liabilities and equity	$ 276,675	$ 225,222