Stockholders' (Deficit) Equity (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 27, 2010
Treasury Stock Repurchase Programs [Line Items]
Common stock authorized to repurchase			$ 1,100,000,000
Remaining common stock available for repurchase		686,900,000
Common stock, held in treasury	161.3	161.3
Common stock repurchased	4,800,000,000	4,800,000,000
Restricted Stock Units [Member]
Treasury Stock Repurchase Programs [Line Items]
Common stock repurchase, share		0.2
Average stock price	$ 38.19
Aggregate cost of share	8,300,000
Maximum Shares Placed in Treasury	0.1
2008 Share Buyback Program [Member]
Treasury Stock Repurchase Programs [Line Items]
Remaining common stock available for repurchase			393,600,000
2010 Share Buyback Program [Member]
Treasury Stock Repurchase Programs [Line Items]
Common stock authorized to repurchase			1,500,000,000
Common stock repurchase, share	1.9	3.7
Average stock price	$ 39.88	$ 38.64
Aggregate cost of share	$ 76,100,000	$ 144,500,000