INVENTORY - Additional Information (Details) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($)
Inventory Disclosure [Abstract]
Real estate inventory, increase (decrease) true up (less than)	$ 2
Amount of completed vacation ownership units classified as property and equipment	$ 58

Changes in estimates within the relative sales value calculations accounted for as real estate inventory true-ups.

No definition available.

Name:	vac_RealEstateInventoryIncreaseDecreaseTrueUp
Namespace Prefix:	vac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration