Discontinued Operations - Reconciliation of Consolidated Income (Loss) From Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income (loss) from discontinued operations attributable to Valvoline
Research and development expense	$ (21)	$ (20)	$ (64)	$ (61)
Income tax expense	5	4	(10)	49
Income from discontinued operations	0	(14)	9	138
Valvoline [Member]
Income (loss) from discontinued operations attributable to Valvoline
Sales		234		1,237
Cost of sales		(148)		(750)
Selling, general and administrative expense		(50)		(222)
Research and development expense		(1)		(8)
Equity and other income		3		17
Pretax operating income of discontinued operations		38		274
Net interest and other financing expense		(5)		(22)
Pretax income of discontinued operations		33		252
Income tax expense		(21)		(91)
Income from discontinued operations	$ (7)	$ 12	$ 1	$ 161

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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