Common Stock Repurchases (Details) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	6 Months Ended
	Jul. 31, 2013	Dec. 28, 2013
Common Stock Repurchases [Abstract]
Stock repurchase program, authorized amount	$ 1,000,000,000
Shares of common stock repurchased		7.5
Value of common stock repurchased		213,500,000
Stock repurchase program, remaining authorized amount		$ 853,700,000