Segments (Summary of Sales Revenue By Similar Product Type) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 15, 2013		Jun. 16, 2012		Jun. 15, 2013		Jun. 16, 2012
Revenue from External Customer [Line Items]
Sales and other revenue	$ 8,696.1		$ 8,833.9		$ 17,202.8		$ 17,337.8
Retail [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	8,696.1		8,833.9		17,202.8		17,337.8
Percentage of total sales and other revenue	100.00%		100.02817%		100.00%		100.04892%
Retail [Member] | Non-Perishables [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	3,550.1	[1]	3,555.5	[1]	7,089.4	[1]	7,060.4	[1]
Percentage of total sales and other revenue	40.80%	[1]	40.20%	[1]	41.20%	[1]	40.70%	[1]
Retail [Member] | Perishables [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	3,129.7	[2]	3,096.8	[2]	6,175.4	[2]	6,124.8	[2]
Percentage of total sales and other revenue	36.00%	[2]	35.10%	[2]	35.90%	[2]	35.30%	[2]
Retail [Member] | Fuel [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	1,031.4		1,199.5		1,995.9		2,222.0
Percentage of total sales and other revenue	11.90%		13.60%		11.60%		12.80%
Retail [Member] | Pharmacy [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	634.4		681.7		1,277.1		1,366.3
Percentage of total sales and other revenue	7.30%		7.70%		7.40%		7.90%
Retail [Member] | Other [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	126.8	[3]	112.4	[3]	257.8	[3]	226.4	[3]
Percentage of total sales and other revenue	1.40%	[3]	1.30%	[3]	1.50%	[3]	1.30%	[3]
Blackhawk [Member]
Revenue from External Customer [Line Items]
Sales and other revenue	$ 223.7		$ 188.0		$ 407.2		$ 337.9
Percentage of total sales and other revenue	2.60%		2.10%		2.40%		2.00%

[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.