Organization - Additional Information (Details)	Sep. 30, 2020 property unit
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of timeshare properties \| property	60
Number of units in timeshare properties \| unit	9,594

Number of timeshare properties as of balance sheet date.

No definition available.

Name:	hgv_NumberOfTimeshareProperties
Namespace Prefix:	hgv_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant