Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Earnings Per Share
Shares repurchased	4,300,000
Value of shares repurchased	$ 150
Shares required for settlement of accelerated share repurchase agreement	341,000
Weighted-average shares outstanding for basic and diluted
Basic weighted-average shares outstanding	281,094,000	273,200,000
Dilutive effect of:
Stock options and restricted stock units	2,049,000	317,000
ASR	184,000
Convertible notes and warrants		15,461,000
Diluted weighted-average shares outstanding	283,327,000	288,978,000
Anti-dilutive effect of weighted average shares	1,000,000	5,000,000