Stockholders' Deficit (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended		3 Months Ended	9 Months Ended
	Jul. 23, 2014	Sep. 30, 2014	Sep. 30, 2014 Share Buyback Program [Member]	Sep. 30, 2014 Share Buyback Program [Member]	Sep. 30, 2014 Restricted Stock Units [Member]
Treasury Stock Repurchase Programs [Line Items]
Additional share repurchase amount authorized	$ 490,600,000
Common stock authorized to repurchase			1,000,000,000	1,000,000,000
Remaining common stock available for repurchase	509,400,000	832,700,000
Common stock repurchase, share			4.2	12.7	0.3
Average stock price			$ 53.99	$ 51.96	$ 54.64
Aggregate cost of share			226,300,000	657,900,000	15,600,000
Common stock, held in treasury		199.6
Common stock repurchased		$ 6,600,000,000