Goodwill and Intangible Assets, Net - Change in Company's Goodwill and Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Dec. 05, 2015	Dec. 05, 2015	Nov. 29, 2014	Feb. 28, 2015
Goodwill [Roll Forward]
Goodwill, Beginning Balance		$ 865
Additions		2
Goodwill, Impairment Loss		0
Goodwill, Other Changes		0
Goodwill, Ending Balance	$ 867	867
Indefinite-lived Intangible Assets [Roll Forward]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	6
Finite-lived Intangible Assets [Roll Forward]
Intangible assets, Beginning balance		136
Addition to Intangible Assets		24
Impairment of Intangible Assets (Excluding Goodwill)		(6)
Intangible Assets Other Adjustments		0
Intangible assets, Ending balance	154	154
Intangible Assets Accumulated Amortization [Roll Forward]
Accumulated amortization, Beginning balance		(88)
Amortization expense of intangible assets		(9)	$ (7)
Intangible Assets Accumulated Amortization, Other Net Adjustments		0
Accumulated amortization, Ending Balance	(97)	(97)
Total intangible assets, net	57	57		$ 48
Independent Business [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance		710
Additions		0
Goodwill, Impairment Loss		0
Goodwill, Other Changes		0
Goodwill, Ending Balance	710	710
Save-A-Lot [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance		141
Additions		1
Goodwill, Impairment Loss		0
Goodwill, Other Changes		0
Goodwill, Ending Balance	142	142
Retail Food [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance		14
Additions		1
Goodwill, Impairment Loss		0
Goodwill, Other Changes		0
Goodwill, Ending Balance	15	15
Trademarks and Tradenames - Indefinite Useful Lives [Member]
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite-lived Intangible Assets, Beginning Balance		9
Indefinite-lived Intangible Assets Acquired		0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		0
Indefinite-lived Intangible Assets, Period Increase (Decrease)		0
Indefinite-lived Intangible Assets, Ending Balance	9	9
Operating leases, Prescription files, Customer Lists And Other [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance		124
Addition to Finite-Lived Intangible Assets		24
Impairment of Intangible Assets, Finite-lived		(6)
Finite Lived Intangible Assets Other Net Adjustments		0
Finite-Lived Intangible Assets, Ending Balance	142	142
Intangible Assets Accumulated Amortization [Roll Forward]
Accumulated amortization, Beginning balance		(86)
Accumulated amortization, Ending Balance	(94)	(94)
Non-Compete Agreements [Member]
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Beginning Balance		3
Addition to Finite-Lived Intangible Assets		0
Impairment of Intangible Assets, Finite-lived		0
Finite Lived Intangible Assets Other Net Adjustments		0
Finite-Lived Intangible Assets, Ending Balance	3	3
Intangible Assets Accumulated Amortization [Roll Forward]
Accumulated amortization, Beginning balance		(2)
Accumulated amortization, Ending Balance	$ (3)	$ (3)