Accounts Receivable - Narrative (Details) $ in Millions	3 Months Ended
Dec. 31, 2018 USD ($)
Receivables [Abstract]
Accounts receivable sold to financial institutions	$ 28

Utilization Of Accounts Receivable, Factoring Under Arrangement

No definition available.

Name:	vvv_UtilizationOfAccountsReceivableFactoringUnderArrangement
Namespace Prefix:	vvv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration