Segments (Summary of Sales Revenue By Similar Product Type) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 14, 2014		Jun. 15, 2013		Jun. 14, 2014		Jun. 15, 2013
Revenue from External Customer [Line Items]
Sales and other revenue	$ 8,307.2		$ 8,149.8		$ 16,345.0		$ 16,151.0
Non-Perishables [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	3,417.4	[1]	3,389.3	[1]	6,809.4	[1]	6,767.3	[1]
Perishables [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	3,107.4	[2]	2,990.8	[2]	6,107.6	[2]	5,901.0	[2]
Fuel [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	1,011.0		1,024.9		1,888.4		1,983.9
Pharmacy [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	631.2		609.5		1,248.4		1,227.1
Other [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	$ 140.2	[3]	$ 135.3	[3]	$ 291.2	[3]	$ 271.7	[3]
Sales [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Percentage of total sales and other revenue	100.00%		100.00%		100.00%		100.00%
Sales [Member] | Product Concentration Risk [Member] | Non-Perishables [Member]
Revenue from External Customer [Line Items]
Percentage of total sales and other revenue	41.10%	[1]	41.60%	[1]	41.70%	[1]	41.90%	[1]
Sales [Member] | Product Concentration Risk [Member] | Perishables [Member]
Revenue from External Customer [Line Items]
Percentage of total sales and other revenue	37.40%	[2]	36.70%	[2]	37.40%	[2]	36.50%	[2]
Sales [Member] | Product Concentration Risk [Member] | Fuel [Member]
Revenue from External Customer [Line Items]
Percentage of total sales and other revenue	12.20%		12.50%		11.50%		12.30%
Sales [Member] | Product Concentration Risk [Member] | Pharmacy [Member]
Revenue from External Customer [Line Items]
Percentage of total sales and other revenue	7.60%		7.50%		7.60%		7.60%
Sales [Member] | Product Concentration Risk [Member] | Other [Member]
Revenue from External Customer [Line Items]
Percentage of total sales and other revenue	1.70%	[3]	1.70%	[3]	1.80%	[3]	1.70%	[3]

[1] Consists primarily of general merchandise, grocery, meal ingredients, soft drinks and other beverages, snacks and frozen foods.

[2] Consists primarily of produce, dairy, meat, bakery, deli, floral and seafood.

[3] Consists primarily of wholesale sales and other revenue.