Leases - Other Supplemental Information related to Lease Portfolio (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2023	Aug. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 135	$ 123
Operating cash flows for finance leases	9	6
Financing activities for finance leases	157	120
Non-cash right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	110	229
Finance leases	$ 131	$ 127

Cash Flow, Lessee [Abstract]

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- Definition

Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract]

+ References

No definition available.

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- Definition

Amount of interest paid on finance lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
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-URI https://asc.fasb.org//1943274/2147478964/842-20-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of cash outflow for principal payment on finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
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Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
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- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

+ References

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