Reportable Segment Information - Disaggregation of Revenues by Geographical Market (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 578	$ 591	$ 1,185	$ 1,148
North America
Segment Reporting Information [Line Items]
Sales	450	443	916	864
EMEA
Segment Reporting Information [Line Items]
Sales	44	47	91	91
Asia Pacific
Segment Reporting Information [Line Items]
Sales	58	73	128	140
Latin America
Segment Reporting Information [Line Items]
Sales	26	28	50	53
Quick Lubes
Segment Reporting Information [Line Items]
Sales	212	200	430	389
Quick Lubes | North America
Segment Reporting Information [Line Items]
Sales	212	200	430	389
Quick Lubes | EMEA
Segment Reporting Information [Line Items]
Sales	0	0	0	0
Quick Lubes | Asia Pacific
Segment Reporting Information [Line Items]
Sales	0	0	0	0
Quick Lubes | Latin America
Segment Reporting Information [Line Items]
Sales	0	0	0	0
Core North America
Segment Reporting Information [Line Items]
Sales	238	243	486	475
Core North America | North America
Segment Reporting Information [Line Items]
Sales	238	243	486	475
Core North America | EMEA
Segment Reporting Information [Line Items]
Sales	0	0	0	0
Core North America | Asia Pacific
Segment Reporting Information [Line Items]
Sales	0	0	0	0
Core North America | Latin America
Segment Reporting Information [Line Items]
Sales	0	0	0	0
International
Segment Reporting Information [Line Items]
Sales	128	148	269	284
International | North America
Segment Reporting Information [Line Items]
Sales	0	0	0	0
International | EMEA
Segment Reporting Information [Line Items]
Sales	44	47	91	91
International | Asia Pacific
Segment Reporting Information [Line Items]
Sales	58	73	128	140
International | Latin America
Segment Reporting Information [Line Items]
Sales	$ 26	$ 28	$ 50	$ 53