COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED COMPREHENSIVE LOSS - Schedule of Changes in Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	4 Months Ended	12 Months Ended
	Jun. 15, 2013	Feb. 28, 2015	Feb. 22, 2014	Feb. 23, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Divestiture of NAI pension plan accumulated other comprehensive loss, net of tax (expense) of $0, $(31) and $0	$ (48)
Pension and postretirement benefit plan accumulated other comprehensive loss at the end of fiscal year, net of tax		(423)	(307)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Pension and postretirement benefit plan accumulated other comprehensive loss at beginning of the fiscal year, net of tax	(612)	(307)	(612)	(657)
Other comprehensive (loss) income before reclassifications, net of tax benefit (expense) of $73, $(85) and $(18), respectively		(188)	202	(20)
Pension settlement charge, net of tax expense of $(25), $0 and $0, respectively		39	0	0
Amortization of amounts included in net periodic benefit cost, net of tax expense of $(21), $(38) and $(40), respectively		33	55	65
Net current-period Other comprehensive income (loss), net of tax benefit (expense) of $27, $(123) and $(22), respectively		(116)	257	45
Divestiture of NAI pension plan accumulated other comprehensive loss, net of tax (expense) of $0, $(31) and $0		0	48	0
Pension and postretirement benefit plan accumulated other comprehensive loss at the end of fiscal year, net of tax		$ (423)	$ (307)	$ (612)