Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities
Net cash provided by operating activities	$ 1,729	$ 1,715
Investing activities
Purchases of property and equipment	(1,887)	(2,126)
Purchases of spectrum licenses and other intangible assets	(2,367)	(51)
Short term affiliate loan receivable, net	0	300
Cash and cash equivalents acquired in MetroPCS business combination	0	2,144
Investments in unconsolidated affiliates, net	(20)	0
Other, net	(1)	(5)
Net cash provided by (used in) investing activities	(4,275)	262
Financing activities
Repayments of short-term debt for purchases of property and equipment	(231)	0
Repayments related to a variable interest entity	0	(40)
Distribution to affiliate	0	(41)
Taxes paid related to net share settlement of stock awards	(72)	0
Excess tax benefit from stock-based compensation	33	3
Proceeds from exercise of stock options	23	72
Other, net	(18)	(3)
Net cash used in financing activities	(265)	(9)
Change in cash and cash equivalents	(2,811)	1,968
Cash and cash equivalents
Beginning of period	5,891	394
End of period	$ 3,080	$ 2,362