Earnings Per Share Antidilutive (Details) Share data in Millions, unless otherwise specified	0 Months Ended	12 Months Ended						12 Months Ended
	Jul. 31, 2013	Dec. 31, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2013 Convertible Senior Notes Due 2013 $575 Million 2.5% [Member]	Jul. 31, 2013 Convertible Senior Notes Due 2013 $575 Million 2.5% [Member] USD ($)	Jun. 30, 2012 Convertible Senior Unsecured Note Due 2013 €500 Million 0.0% [Member] EUR (€)	Dec. 31, 2013 Stock options, SOSARs and RSUs	Dec. 29, 2012 Stock options, SOSARs and RSUs	Dec. 31, 2011 Stock options, SOSARs and RSUs	Dec. 31, 2013 Warrants to issue shares of Class B common stock
Anti-dilutive securities:
Anti-dilutive security (in shares)		0.1	1.5	0.9				0.1	1.5	0.9	10.9
Debt instrument, interest rate percentage					2.50%
Face amount of senior convertible notes						$ 575,000,000	€ 500,000,000
Period following convertible debt maturity date to calculate weighted average stock price	25 days