Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions			3 Months Ended			9 Months Ended
	Nov. 15, 2017	Mar. 01, 2017	Feb. 25, 2017	Dec. 03, 2016	Dec. 05, 2015	Dec. 03, 2016	Dec. 05, 2015
Defined Benefit Plan Disclosure [Line Items]
Settlement of Asset Retirement Obligations Through Noncash Payments, Amount						$ 41
Defined Benefit Plan, Benefits Paid						$ 195
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				4.10%		4.10%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets						6.50%
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, before Tax						$ 145
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax						98
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year						30
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year						35
Subsequent Event [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer			$ 25
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 10	$ 25
Multiemployer Plans, Postretirement Benefit [Member]
Multiemployer Plans [Line Items]
Multiemployer Plan, Period Contributions						31	$ 31
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer				$ 0	$ 0	$ 2	$ 27