Lease Obligations (Total Rent Expense For All Operating Leases) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Jan. 01, 2011		Jan. 02, 2010
Property leases:
Minimum rentals	$ 452.2		$ 447.9		$ 445.0
Contingent rentals	8.1	[1]	8.8	[1]	8.5	[1]
Less rentals from subleases	(9.0)		(8.7)		(11.3)
Operating leases total rental expense	475.7		474.5		468.5
Property Leases [Member]
Property leases:
Operating leases total rental expense	451.3		448.0		442.2
Equipment Leases [Member]
Property leases:
Operating leases total rental expense	$ 24.4		$ 26.5		$ 26.3

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