Transfers of Financial Assets - Additional Information (Detail) $ in Millions	3 Months Ended
Mar. 31, 2016 USD ($) Transactions	Mar. 31, 2015 USD ($)
Transfers And Servicing [Abstract]
Number of securitization transactions in which company has variable interest \| Transactions	3
Principal amount of repurchased or replaced defaulted VOI notes receivable	$ 2	$ 3
Obligation to receive cash flows from VIE	$ 6	$ 8

Cash Flows between a transferor and a transferee attributable to purchases of previously transferred financial assets (or its underlying collateral) related to a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107207-111719

Name:	us-gaap_CashFlowsBetweenTransfereeAndTransferorPurchasesOfPreviouslyTransferredFinancialAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration