CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities
Net loss	$ (643)	$ (863)
Adjustments to reconcile net loss to net cash provided by operating activities:
Asset impairments	0	84
Depreciation and amortization	1,492	1,666
Provision for losses on accounts receivable	83	136
Share-based compensation expense	17	17
Deferred income taxes	24	32
Equity in losses of unconsolidated investments and other, net	202	273
Gains from asset dispositions and exchanges	0	(29)
Contribution to pension plan	0	(92)
Spectrum hosting contract termination	0	(236)
Other changes in assets and liabilities:
Accounts and notes receivable	215	(78)
Inventories and other current assets	243	52
Accounts payable and other current liabilities	(734)	52
Non-current assets and liabilities, net	16	(63)
Other, net	25	27
Net cash provided by operating activities	940	978
Cash flows from investing activities
Capital expenditures	(1,381)	(783)
Expenditures relating to FCC licenses	(55)	(56)
Investment in Clearwire	(80)	(128)
Proceeds from sales and maturities of short-term investments	1,281	150
Purchases of short-term investments	(926)	(477)
Other, net	3	(1)
Net cash used in investing activities	(1,158)	(1,295)
Cash flows from financing activities
Proceeds from debt and financings	204	2,000
Repayments of debt and capital lease obligations	(59)	(2)
Debt financing costs	(10)	(36)
Other, net	7	3
Net cash provided by (used in) financing activities	142	1,965
Net increase (decrease) in cash and cash equivalents	(76)	1,648
Cash and cash equivalents, beginning of period	6,351	5,447
Cash and cash equivalents, end of period	$ 6,275	$ 7,095