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Stock Incentive Plans - Summary of Nonvested Stock Awards and Performance Shares Activity (Details) - Performance Shares [Member] - $ / shares shares in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested - beginning of year	260	268	199
Granted	78	101	71
Vested	(68)	(104)	(69)
Forfeitures	(10)	(5)	(54)
Transfer to Valvoline Inc.			(21)
Conversion adjustment			142
Nonvested - end of year	260	260	268
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average grant date fair value, nonvested - beginning of year	$ 64.55	$ 63.00	$ 106.91
Weighted-average grant date fair value, granted	84.93	68.93	99.86
Weighted-average grant date fair value, vested	61.67	65.53	85.86
Weighted-average grant date fair value, forfeitures	65.16	66.24	75.52
Weighted-average grant date fair value, transfer to Valvoline Inc.			115.68
Weighted-average grant date fair value, nonvested - end of year	$ 76.59	$ 64.55	$ 63.00

X

- Definition

Share based compensation arrangement by share based payment award equity instruments other than options transferred.

+ References

No definition available.

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- Definition

Represents the conversion adjustments for shares outstanding at the time of the final distribution of Valvoline Inc.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for awards that transferred to Valvoline Inc. upon final distribution.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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