Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 1,788	$ 3,093
Short-term investments	618	470
Accounts receivable, net of allowances of $661 and $641	12,216	12,576
Inventories	1,040	1,075
Prepaid expenses and other	6,295	4,021
Total current assets	21,957	21,235
Plant, property and equipment	215,224	209,575
Less accumulated depreciation	126,892	120,933
Plant, property and equipment, net	88,332	88,642
Investments in unconsolidated businesses	3,319	3,401
Wireless licenses	75,825	77,744
Goodwill	24,336	24,139
Other intangible assets, net	5,776	5,933
Other assets	3,801	4,128
Total assets	223,346	225,222
Current liabilities
Debt maturing within one year	7,961	4,369
Accounts payable and accrued liabilities	14,671	16,182
Other	6,559	6,405
Total current liabilities	29,191	26,956
Long-term debt	41,791	47,618
Employee benefit obligations	33,835	34,346
Deferred income taxes	25,696	24,677
Other liabilities	5,677	6,092
Equity
Series preferred stock ($.10 par value; none issued)
Common stock ($.10 par value; 2,967,610,119 shares issued in both periods)	297	297
Contributed capital	37,895	37,990
Accumulated deficit	(2,483)	(3,734)
Accumulated other comprehensive income	1,994	2,235
Common stock in treasury, at cost	(3,974)	(4,071)
Deferred compensation - employee stock ownership plans and other	332	440
Noncontrolling interests	53,095	52,376
Total equity	87,156	85,533
Total liabilities and equity	$ 223,346	$ 225,222