Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Sep. 08, 2018	Sep. 09, 2017
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Contributions by Employer	$ 25	$ 20
Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	5
Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 10