INVENTORY - Composition of Inventory (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Finished goods	$ 840	$ 843
Work-in-progress	59	9
Real estate inventory	899	852
Other	11	11
Inventory	$ 910	$ 863

No definition available.

Name:	us-gaap_InventoryDisclosureAbstract
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- Definition

Amount of real estate which is available for sale in the form of shared property ownership in which rights vest in several owners (buyers, timeshare holders) to use the property for a specified period each year (timeshare). Included in this item would be real estate assets in which timeshares are for sale, such as in condominiums at timeshare resorts. Excluded from this item would be assets, other than real estate, in which the Entity has sold or intends to sell timeshares, such as for cruises, recreational vehicles, campgrounds, aircraft (fractional ownership) and other types of rights.

+ References

No definition available.

+ Details

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

- Definition

Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_InventoryWorkInProcess
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- Definition

Total of (1) improvements, (2) held-for-sale, (3) construction-in-process, and (4) operating supplies, held in the normal course of business.

+ References

No definition available.

+ Details

Name:	vac_InventoryTimeshare
Namespace Prefix:	vac_
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Balance Type:	debit
Period Type:	instant

- Definition

Total of (1) improvements, (2) held-for-sale, and (3) construction-in-process.

+ References

No definition available.

+ Details

Name:	vac_InventoryTimeshareGross
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Period Type:	instant

- Definition

Operating Supplies and Inventories

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant