Comprehensive Income and Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 09, 2017	Sep. 10, 2016	Sep. 09, 2017	Sep. 10, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss at beginning of the fiscal year, net of tax			$ (278)	$ (422)
Other comprehensive loss before reclassifications			0	(1)
Amortization of amounts included in net periodic benefit cost			(1)	11
Amortization of cash flow hedge			1	1
Total other comprehensive income	$ 0	$ 5	0	11
Accumulated other comprehensive loss at the end of period, net of tax	(278)	(411)	(278)	(411)
Other comprehensive loss before reclassifications, tax benefit			0	0
Amortization of amounts included in net periodic benefit cost, tax expense			(1)	6
Amortization of cash flow hedge, tax expense			1	0
Net current-period Other comprehensive income, tax expense			0	6
Accumulated Defined Benefit Plans Adjustment Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss at beginning of the fiscal year, net of tax			(276)	(418)
Other comprehensive loss before reclassifications			0	0
Amortization of amounts included in net periodic benefit cost			(1)	11
Amortization of cash flow hedge			0	0
Total other comprehensive income			(1)	11
Accumulated other comprehensive loss at the end of period, net of tax	(277)	(407)	(277)	(407)
Other comprehensive loss before reclassifications, tax benefit			0	0
Amortization of amounts included in net periodic benefit cost, tax expense			(1)	6
Amortization of cash flow hedge, tax expense			0	0
Net current-period Other comprehensive income, tax expense			(1)	6
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss at beginning of the fiscal year, net of tax			(2)	(4)
Other comprehensive loss before reclassifications			0	(1)
Amortization of amounts included in net periodic benefit cost			0	0
Amortization of cash flow hedge			1	1
Total other comprehensive income			1	0
Accumulated other comprehensive loss at the end of period, net of tax	$ (1)	$ (4)	(1)	(4)
Other comprehensive loss before reclassifications, tax benefit			0	0
Amortization of amounts included in net periodic benefit cost, tax expense			0	0
Amortization of cash flow hedge, tax expense			1	0
Net current-period Other comprehensive income, tax expense			$ 1	$ 0