Goodwill and Other Intangibles - Summary of Goodwill by Segment (Details) $ in Millions	9 Months Ended
Jun. 30, 2020 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 430
Acquisitions	8
Currency translation	(1)
Goodwill, Written off Related to Sale of Business Unit	3
Goodwill, ending balance	434
Quick Lubes
Goodwill [Roll Forward]
Goodwill, beginning balance	301
Acquisitions	8
Currency translation	(1)
Goodwill, Written off Related to Sale of Business Unit	3
Goodwill, ending balance	305
Core North America
Goodwill [Roll Forward]
Goodwill, beginning balance	89
Acquisitions	0
Currency translation	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, ending balance	89
International
Goodwill [Roll Forward]
Goodwill, beginning balance	40
Acquisitions	0
Currency translation	0
Goodwill, Written off Related to Sale of Business Unit	0
Goodwill, ending balance	$ 40

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 350
-SubTopic 20
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