Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended			4 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended											4 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended				4 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended							4 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended			12 Months Ended					12 Months Ended
	Feb. 22, 2014	Feb. 23, 2013	Feb. 25, 2012	Jun. 15, 2013 Revision [Member]	Sep. 07, 2013 Revision [Member]	Nov. 30, 2013 Revision [Member]	Feb. 23, 2013 Revision [Member]	Feb. 25, 2012 Revision [Member]	Feb. 22, 2014 Symphony Investors [Member]	Feb. 23, 2013 NAI Banners [Member]	Feb. 25, 2012 NAI Banners [Member]	Feb. 22, 2014 Asset under Construction [Member]	Feb. 23, 2013 Asset under Construction [Member]	Feb. 25, 2012 Asset under Construction [Member]	Feb. 22, 2014 Retail Food [Member] Markets	Feb. 23, 2013 Retail Food [Member]	Feb. 25, 2012 Retail Food [Member]	Jun. 15, 2013 Retail Food [Member] Revision [Member]	Sep. 07, 2013 Retail Food [Member] Revision [Member]	Nov. 30, 2013 Retail Food [Member] Revision [Member]	Feb. 22, 2014 Retail Food [Member] Revision [Member]	Feb. 22, 2014 Corporate [Member] Store	Feb. 23, 2013 Corporate [Member]	Feb. 25, 2012 Corporate [Member]	Jun. 15, 2013 Corporate [Member] Revision [Member]	Sep. 07, 2013 Corporate [Member] Revision [Member]	Nov. 30, 2013 Corporate [Member] Revision [Member]	Feb. 22, 2014 Corporate [Member] Revision [Member]	Feb. 22, 2014 Retail Food and Save-A-Lot [Member]	Feb. 23, 2013 Retail Food and Save-A-Lot [Member]	Feb. 25, 2012 Retail Food and Save-A-Lot [Member]	Feb. 22, 2014 Save-A-Lot [Member] Markets	Feb. 23, 2013 Save-A-Lot [Member] Store	Feb. 25, 2012 Save-A-Lot [Member]	Jun. 15, 2013 Save-A-Lot [Member] Revision [Member]	Sep. 07, 2013 Save-A-Lot [Member] Revision [Member]	Nov. 30, 2013 Save-A-Lot [Member] Revision [Member]	Feb. 22, 2014 Minimum [Member]	Feb. 23, 2013 Minimum [Member]	Feb. 25, 2012 Minimum [Member]	Feb. 22, 2014 Minimum [Member] Building Improvements [Member]	Feb. 22, 2014 Minimum [Member] Equipment [Member]	Feb. 22, 2014 Maximum [Member]	Feb. 23, 2013 Maximum [Member]	Feb. 25, 2012 Maximum [Member]	Feb. 22, 2014 Maximum [Member] Building Improvements [Member]	Feb. 22, 2014 Maximum [Member] Equipment [Member]
Significant Accounting Policies [Line Items]
Number of weeks in first quarter	16 weeks
Number of weeks in second, third and fourth quarter	12 weeks
Historical fees recognized under the existing TSA as a reduction of selling and administrative expenses										$ 42	$ 47
Operating earnings (loss)	418	(157)	96												72	(160)	(36)	(20)	(20)	(20)	20	(56)	(339)	(352)	20	20	20	20				167	143	230
Retail food advertising expenses																													63	86	69
Net book overdrafts	134	131
Allowance for losses on receivables	9	5
Bad debt expense	16	11	6
Percentage of inventory valued under LIFO	57.00%	60.00%
Percentage of LIFO inventory valued under replacement cost method	5.00%	5.00%
Percentage of LIFO inventory valued under retail inventory method and weighted average	52.00%	55.00%
Percentage of FIFO inventory valued under cost, weighted average cost and retail inventory method	25.00%	23.00%
Percentage of FIFO inventory valued under replacement cost method	18.00%	17.00%
Cost of sales decreased due to certain LIFO layers were reduced	14	6	9
Value increase in inventory by changing the method from LIFO to FIFO	202	211
Remaining lease term																																						1 year					15 years
Estimated useful life																																									10 years	3 years				40 years	10 years
Interest capitalized during period												1	4	6
Number of geographic market															5																	11
Number of individual corporate stores																						29
Impairment of long-lived assets related to store closures		8																															16
Number of non-strategic stores closed																																	22
Discount rate	4.65%	4.25%	4.55%																																			0.30%	0.40%	0.40%			5.10%	5.10%	5.10%
Discount on self-insurance reserve	7	7
Accumulated other comprehensive loss	48
Percentage on issued and outstanding common stock									30.00%
Common stock Purchase price									$ 4.00
Validly tendered shares									12
Percentage on issued and outstanding common stock									5.50%
Tender offer expiration date									Mar. 20, 2013
Additional common stock issued									42
Percentage of outstanding shares									19.90%
Tender offer price per share									$ 4.00
Cash proceeds from the issuance of shares	$ 177								$ 170
Ownership percentage after share issuance									21.20%