Organization - Additional Information (Details) $ in Millions	3 Months Ended
Mar. 31, 2018 USD ($) property unit	Mar. 31, 2017 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of timeshare properties \| property	48
Number of units in timeshare properties \| unit	8,102
Costs related to agreements with related parties \| $	$ 59	$ 58

Expenses Relating to Agreements with Former Parent

No definition available.

Name:	hgv_ExpensesRelatingtoAgreementswithFormerParent
Namespace Prefix:	hgv_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration