Stockholders' (Deficit) Equity (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	12 Months Ended		1 Months Ended		7 Months Ended
	Jan. 31, 2014	Dec. 31, 2012	Dec. 31, 2013	Jan. 31, 2014 Two Thousand Fourteen Share Buyback Program [Member]	Jan. 31, 2014 Two Thousand Thirteen Share Buyback Program [Member]	Jul. 24, 2013 Two Thousand Thirteen Share Buyback Program [Member]	Jul. 24, 2013 Two Thousand Twelve Share Buyback Program [Member]
Treasury Stock Repurchase Programs [Line Items]
Additional share repurchase amount authorized	$ 527,600,000					$ 518,700,000
Common stock authorized to repurchase				1,000,000,000		1,000,000,000
Remaining common stock available for repurchase					472,400,000		481,300,000
Special dividend declared, per share		$ 2.75
Special dividend paid		463,500,000
Special dividends declaration date		Apr. 27, 2011
Special dividends payable date		May 18, 2011
Common stock, held in treasury			186.6
Common stock repurchased			$ 6,000,000,000