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Stock-Based Compensation Plans - Summary of Stock-Based Compensation Expense (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 16, 2020
Feb. 17, 2019
Feb. 16, 2020
Feb. 17, 2019
Document Period End Date     Feb. 16, 2020  
Stock-based compensation expense before income taxes $ 118 $ 119 $ 419 $ 389
Less recognized income tax benefit (21) (23) (87) (84)
Stock-based compensation expense, net of income taxes $ 97 $ 96 $ 332 $ 305
Restricted Stock Units (RSUs) [Member]        
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition     1 year 8 months 12 days