Equity (Tables)

12 Months Ended

Dec. 31, 2014

Changes in Common Stock

Shares of Common Stock Outstanding
(in millions)	A	A Special	B
Balance, December 31, 2011	2,095	601	9
Stock compensation plans	24	3	-
Repurchases and retirements of common stock	-	(96)	-
Employee stock purchase plans	3	-	-
Balance, December 31, 2012	2,122	508	9
Stock compensation plans	14	-	-
Repurchases and retirements of common stock	-	(49)	-
Employee stock purchase plans	2	-	-
Balance, December 31, 2013	2,138	459	9
Stock compensation plans	13	-	-
Repurchases and retirements of common stock	(22)	(59)	-
Employee stock purchase plans	2	-	-
Balance, December 31, 2014	2,131	400	9

Aggregate Share Repurchases

Share Repurchases
Year ended December 31 (in millions)		2014		2013		2012
Cash consideration	$	4,251	$	2,000	$	3,000
Shares repurchased		81		49		96

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated Other Comprehensive Income (Loss)
December 31 (in millions)			2014		2013
Unrealized gains (losses) on marketable securities		$	1	$	67
Deferred gains (losses) on cash flow hedges			(4)		(45)
Unrecognized gains (losses) on employee benefit obligations			(68)		71
Cumulative translation adjustments			(75)		(37)
Accumulated other comprehensive income (loss), net of deferred taxes		$	(146)	$	56

NBCUniversal Media, LLC [Member]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated Other Comprehensive Income (Loss)
December 31 (in millions)		2014		2013
Deferred gains (losses) on cash flow hedges		$	20	$	(5)
Unrecognized gains (losses) on employee benefit obligations			(61)		45
Cumulative translation adjustments			(118)		(56)
Accumulated other comprehensive income (loss)		$	(159)	$	(16)