Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Sep. 08, 2018	Sep. 09, 2017	Sep. 08, 2018	Sep. 09, 2017
Statement of Comprehensive Income [Abstract]
Net loss including noncontrolling interests		$ (58)	$ (25)	$ (79)	$ (13)
Other comprehensive income:
Recognition of pension and other postretirement benefit obligations(1)	[1]	0	(1)	0	(1)
Recognition of interest rate swap cash flow hedge(2)	[2]	0	1	0	1
Total other comprehensive income		0	0	0	0
Comprehensive loss including noncontrolling interest		(58)	(25)	(79)	(13)
Less comprehensive loss (income) attributable to noncontrolling interests		1	0	1	(1)
Comprehensive loss attributable to SUPERVALU INC.		$ (57)	$ (25)	$ (78)	$ (14)

[1] Amounts are net of tax expense (benefit) of $0, $0, $0 and $(1) for the second quarters of fiscal 2019 and 2018, and for fiscal 2019 and 2018 year-to-date, respectively.

[2] Amounts are net of tax expense (benefit) of $0, $(1), $0 and $0 for the second quarters of fiscal 2019 and 2018, and for fiscal 2019 and 2018 year-to-date, respectively.