Leases - Supplemental Income Statement Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022
Operating lease cost
Fixed	$ 879	$ 811	$ 2,545	$ 2,431
Variable	218	198	613	600
Finance lease cost
Amortization	15	11	36	33
Interest	14	13	38	38
Sublease income	29	24	87	76
Impairment of right-of-use assets	38	11	109	82
Gain on sale-leaseback transactions	293	175	825	410
U.S. Retail Pharmacy
Finance lease cost
Gain on sale-leaseback transactions	263	114	647	349
International
Finance lease cost
Gain on sale-leaseback transactions	30	$ 61	178	61
International \| GERMANY
Finance lease cost
Gain on sale-leaseback transactions	30		178
International \| GERMANY \| Fiscal Year 2023 Acquistions
Finance lease cost
Gain on sale-leaseback transactions	$ 6		$ 47
International \| United Kingdom
Finance lease cost
Gain on sale-leaseback transactions				$ 61

Amount of interest expense on finance 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 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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