Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Sales	$ 613	$ 577	$ 1,761	$ 1,691
Sales at a point in time
Disaggregation of Revenue [Line Items]
Sales	602		1,730
Franchised revenues transferred over time
Disaggregation of Revenue [Line Items]
Sales	11		31
North America
Disaggregation of Revenue [Line Items]
Sales	471		1,335
Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Sales	43		134
Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	72		212
Latin America
Disaggregation of Revenue [Line Items]
Sales	27		80
Quick Lubes
Disaggregation of Revenue [Line Items]
Sales	211		600
Quick Lubes | North America
Disaggregation of Revenue [Line Items]
Sales	211		600
Quick Lubes | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Sales	0		0
Quick Lubes | Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	0		0
Quick Lubes | Latin America
Disaggregation of Revenue [Line Items]
Sales	0		0
Core North America
Disaggregation of Revenue [Line Items]
Sales	260		735
Core North America | North America
Disaggregation of Revenue [Line Items]
Sales	260		735
Core North America | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Sales	0		0
Core North America | Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	0		0
Core North America | Latin America
Disaggregation of Revenue [Line Items]
Sales	0		0
International
Disaggregation of Revenue [Line Items]
Sales	142		426
International | North America
Disaggregation of Revenue [Line Items]
Sales	0		0
International | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Sales	43		134
International | Asia Pacific
Disaggregation of Revenue [Line Items]
Sales	72		212
International | Latin America
Disaggregation of Revenue [Line Items]
Sales	27		80
Company-owned operations | Quick Lubes
Disaggregation of Revenue [Line Items]
Sales	136		388
Non-company owned operations | Quick Lubes
Disaggregation of Revenue [Line Items]
Sales	75		212
Retail | Core North America
Disaggregation of Revenue [Line Items]
Sales	143		399
Installer and other | Core North America
Disaggregation of Revenue [Line Items]
Sales	$ 117		$ 336