The Company and Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012 stores	Dec. 31, 2011	Jan. 01, 2011
Significant Accounting Policies [Line Items]
Number of North American stores in operation	1,641
Percentage of ownership in Casa Ley, S.A. de C.V.		49.00%	49.00%
Current year fiscal period	P52W	P52W	P52W
Other accrued liabilities	$ 643.8	$ 675.9
Retained earnings	7,609.8	7,175.3
Deferred income taxes, current	45.7	77.8
Recognition period of revenue for gift cards	2 years
Gift card breakage	9.8	9.2	9.2
Advertising and promotional expenses	497.0	491.3	508.7
Book overdrafts	25.8	1.2
Merchandise inventory	1,608.4	1,607.6
LIFO replacement or current cost	1,678.9	1,677.7
Self-insurance liability discount rate	0.75%	0.75%	2.00%
Notes receivable fair value	130.6
Casa Ley [Member]
Significant Accounting Policies [Line Items]
Number of North American stores in operation	195
Percentage of ownership in Casa Ley, S.A. de C.V.	49.00%
Stores and other buildings [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	7 years
Stores and other buildings [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	40 years
Fixtures and equipment [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	3 years
Fixtures and equipment [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	15 years
Restatement Adjustment [Member]
Significant Accounting Policies [Line Items]
Other accrued liabilities		42.8
Retained earnings			26.2
Deferred income taxes, current		$ 16.6