Share-Based Payments Stock Options and SOSARs (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010	Dec. 29, 2012 Options and SOSARs	Dec. 31, 2011 Options and SOSARs	Dec. 25, 2010 Options and SOSARs	Dec. 29, 2012 Options, SOSARs, RSUs, DSUs, PSUs, and PU Awards	Jun. 30, 2012 Options, SOSARs, RSUs, DSUs, PSUs, and PU Awards
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at the beginning of the period (in shares)				7,100,000
Granted (in shares)				300,000
Exercised				(1,200,000)
Forfeited				(200,000)
Outstanding at the end of the period (in shares)				6,000,000	7,100,000
Exercisable at beginning of period (in shares)				5,700,000
Exercisable at end of period (in shares)				5,200,000	5,700,000
Weighted-average exercise price of shares outstanding, beginning of the period (in dollars per share)				$ 38.69
Weighted-average exercise price of shares granted (in dollars per share)				$ 42.57
Weighted-average exercise price of shares exercised (in dollars per share)				$ 29.27
Weighted-average exercise price of shares forfeited (in dollars per share)				$ 45.65
Weighted-average exercise price of shares outstanding, end of the period (in dollars per share)				$ 40.55	$ 38.69
Weighted-average exercise price of shares exercisable, beginning or period (in dollars per share)				$ 37.58
Weighted-average exercise price of shares exercisable, end of period (in dollars per share)				$ 40.07	$ 37.58
Weighted-average remaining contractual life outstanding, beginning of period (in years)				4 years 0 months 18 days	4 years 3 months 23 days
Weighted-average remaining contractual life outstanding, end of period (in years)				4 years 0 months 18 days	4 years 3 months 23 days
Weighted-average remaining contractual life exercisable, beginning of period (in years)				3 years 4 months 18 days	3 years 4 months 4 days
Weighted-average remaining contractual life exercisable, end of period (in years)				3 years 4 months 18 days	3 years 4 months 4 days
Aggregate intrinsic value of shares outstanding, beginning of period (in dollars)				$ 43.1
Aggregate intrinsic value of shares outstanding, end of period (in dollars)				23.2	43.1
Aggregate intrinsic value of shares exercisable, beginning of period (in dollars)				42.6
Aggregate intrinsic value of shares exercisable, end of period (in dollars)				23.1	42.6
Total intrinsic value of stock options exercised				16.7	3.9	16.0
Exercise of stock options under equity compensation plans	34.1	11.6	38.5	34.1	11.6	38.5
Tax benefit from stock options exercised				$ 4.9	$ 2.0	$ 4.8
Shares authorized and available for issuance (in shares)							8,100,000	5,000,000