Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

+ Details

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

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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

- Definition

Gross amount of components used by the entity which are bought from another entity rather than produced by the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_OtherInventoryPurchasedGoods
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Inventory Sold Subject To Conditional Repurchase

+ References

No definition available.

+ Details

Name:	wyn_InventorySoldSubjectToConditionalRepurchase
Namespace Prefix:	wyn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Proceeds from Sale of Assets, Financing Activities

+ References

No definition available.

+ Details

Name:	wyn_ProceedsfromSaleofAssetsFinancingActivities
Namespace Prefix:	wyn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Property and Equipment transferred to Inventory

+ References

No definition available.

+ Details

Name:	wyn_PropertyandEquipmenttransferredtoInventory
Namespace Prefix:	wyn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Real Estate, Inventory [Line Items]

+ References

No definition available.

+ Details

Name:	wyn_RealEstateInventoryLineItems
Namespace Prefix:	wyn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis=wyn_St.ThomasU.S.VirginIslandInventorySaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis=wyn_LasVegasNevadaandSt.ThomasU.S.VirginIslandInventorySalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=wyn_VacationOwnershipInventorySalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Inventory (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
Inventory (Narrative) (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2015	Dec. 31, 2017
Real Estate, Inventory [Line Items]
Transferred property and equipment to VOI inventory	$ 48,000,000	$ 17,000,000
Inventory accruals	7,000,000			$ 6,000,000
Inventory sold subject to conditional repurchase	43,000,000			$ 43,000,000
St. Thomas [Member]
Real Estate, Inventory [Line Items]
Inventory sold subject to conditional repurchase			$ 80,000,000
Proceeds from the sale of assets			80,000,000
Las Vegas, Nevada and St. Thomas, U.S. Virgin Island Inventory Sales [Member]
Real Estate, Inventory [Line Items]
Maximum potential future payments	$ 133,000,000
Vacation Ownership Inventory Sales [Member]
Real Estate, Inventory [Line Items]
No gain or loss on sales transactions			$ 0