Income Taxes - Reconciliations of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 241	$ 190	$ 164
Additions for tax positions of prior years	22	15	10
Reductions for tax positions of prior years	(21)	(3)	(9)
Additions for tax positions related to current year	36	36	27
Cash settlements	(3)	0	(1)
Reductions from lapses in statutes of limitations	(3)	(2)	(1)
Reductions from non-cash settlements with taxing authorities	(9)	0	(2)
Foreign exchange rate adjustment	(10)	5	2
Ending balance	253	241	190
Unrecognized tax benefits that would affect the effective tax rate (if recognized)	$ 150	$ 139	$ 109

Amount of increase (decrease) in unrecognized tax benefits resulting from foreign exchange rate adjustments.

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- Definition

The gross amount of decreases in unrecognized tax benefits resulting from cash settlements.

+ References

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
-URI https://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Section 50
-Paragraph 15A
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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