Stockholders' Deficit (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	11 Months Ended	3 Months Ended		6 Months Ended	11 Months Ended
	Mar. 31, 2013	Dec. 05, 2012	Mar. 31, 2013 Restricted Stock Units [Member]	Mar. 31, 2013 2010 Share Buyback Program [Member]	Jun. 27, 2010 2010 Share Buyback Program [Member]	Dec. 05, 2012 Two Thousand Twelve Share Buyback Program [Member]
Treasury Stock Repurchase Programs [Line Items]
Common stock authorized to repurchase		$ 458,800,000				$ 1,000,000,000
Remaining common stock available for repurchase	843,600,000				541,200,000
Common stock repurchase, share			0.2	3.0
Average stock price			$ 45.30	$ 44.16
Aggregate cost of share			10,900,000	132,000,000
Common stock, held in treasury	168.6
Common stock repurchased	$ 5,100,000,000