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Derivative Instruments - Gain (Loss) on Derivatives (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 28, 2019
Nov. 29, 2018
Mar. 01, 2018
Feb. 28, 2019
Mar. 01, 2018
Designated hedging instruments | Cash flow hedges          
Derivative Instruments, Gain (Loss) [Line Items]          
Net gains (losses) recognized in other comprehensive income, effective portion $ 7   $ 21 $ (6) $ 17
Designated hedging instruments | Fair value hedges          
Derivative Instruments, Gain (Loss) [Line Items]          
Gain on fair value hedged instruments     56    
Losses from amortization of amounts excluded from hedge effectiveness     (19)    
Currency forward | Not designated hedging instruments          
Derivative Instruments, Gain (Loss) [Line Items]          
Net gains (losses) for derivative instruments without hedge accounting designation 11 $ (11) 50   52
Convertible notes settlement obligation | Not designated hedging instruments          
Derivative Instruments, Gain (Loss) [Line Items]          
Net gains (losses) for derivative instruments without hedge accounting designation $ (82)   $ (20) $ (66) $ (24)