Stock-Based Compensation Plans - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	2 Months Ended	3 Months Ended			4 Months Ended	6 Months Ended			12 Months Ended
	Feb. 18, 2018	Feb. 18, 2018		Feb. 12, 2017	Dec. 31, 2017	Feb. 18, 2018		Feb. 12, 2017	Sep. 01, 2019	Sep. 02, 2018
Stock-based compensation expense before income taxes		$ 112		$ 111		$ 346		$ 322
Less recognized income tax benefit		(2)	[1]	(37)		(79)	[1]	(106)
Stock-based compensation expense, net of income taxes		$ 110		$ 74		$ 267		$ 216
Scenario, Plan [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%				35.00%				21.00%	25.60%

[1] In the second quarter and first half of 2018, the income tax benefit reflects the permanent reduction in the U.S. federal statutory income tax rate from 35% to 21%.