Leases - Components of Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
May 31, 2020	May 31, 2020
Operating lease cost
Fixed	$ 827	$ 2,496
Variable	167	595
Finance lease cost
Amortization	10	29
Interest	14	42
Sublease income	(25)	(56)
Impairment of right-of-use assets	170	182
Impairment of finance lease assets	21	24
Gains on sale-leaseback transactions	84	224
Transformational Cost Management and Store Optimization Programs \| Lease obligations and other real estate costs
Finance lease cost
Total impairments	$ 153	$ 166

Amount of impairment loss from right-of-use asset from finance lease.

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Amount of interest expense on finance lease liability.

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Amount of amortization expense attributable to right-of-use asset from finance lease.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of loss from impairment of right-of-use asset from operating lease.

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Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

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Amount of sublease income excluding finance and operating lease expense.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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Restructuring Reserve, Other, Non-Cash

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