Lease Obligations (Total Rent Expense For All Operating Leases) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012		Dec. 31, 2011		Jan. 01, 2011
Property leases:
Operating leases total rental expense	$ 481.2		$ 475.7		$ 474.5
Property Leases [Member]
Property leases:
Minimum rentals	458.7		452.2		447.9
Contingent rentals	8.3	[1]	8.1	[1]	8.8	[1]
Less rentals from subleases	(10.5)		(9.0)		(8.7)
Operating leases total rental expense	456.5		451.3		448.0
Equipment Leases [Member]
Property leases:
Operating leases total rental expense	$ 24.7		$ 24.4		$ 26.5

[1] In general, contingent rentals are based on individual store sales.