Organization - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($) property unit	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) property unit	Sep. 30, 2018 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of timeshare properties \| property	57		57
Number of units in timeshare properties \| unit	9,177		9,177
Costs related to agreements with related parties \| $	$ 36	$ 38	$ 128	$ 135

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration