Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Deferred Tax Liabilities, Goodwill and Intangible Assets [Abstract]

Indefinite-Lived Intangible Assets

	December 31, 2009		Net Additions/ (Reductions)			December 31, 2010		Net Additions/ (Reductions)		December 31, 2011
	(in millions)
FCC licenses	$	19,502	$	425		$	19,927	$	117	$	20,044
Trademarks	409		—			409		—		409
Goodwill(1)	373		(14		)	359		—		359
	$	20,284	$	411		$	20,695	$	117	$	20,812

Intangible Assets Subject to Amortization

During 2011, we conducted our annual assessment of the recoverability of intangible assets subject to amortization and determined that no adjustment was necessary.

		December 31, 2011							December 31, 2010
	Useful Lives	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Gross Carrying Value		Accumulated Amortization			Net Carrying Value
							(in millions)
Customer relationships	4 to 5 years	$	341	$	(297	)	$	44	$	1,925	$	(1,717	)	$	208
Other intangible assets
Trademarks	10 to 37 years	1,169		(585		)	584		1,169		(490		)	679
Reacquired rights	9 to 14 years	1,571		(652		)	919		1,571		(519		)	1,052
Other	9 to 16 years	126		(57		)	69		116		(46		)	70
Total other intangible assets		2,866		(1,294		)	1,572		2,856		(1,055		)	1,801
Total definite-lived intangible assets		$	3,207	$	(1,591	)	$	1,616	$	4,781	$	(2,772	)	$	2,009

Schedule of Intangibles Estimated Amortization

	2012		2013		2014		2015		2016
	(in millions)
Estimated amortization expense	$	280	$	243	$	239	$	198	$	137