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INVENTORY - Additional Information (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 30, 2016
Inventory [Line Items]    
Land and infrastructure $ 330 $ 331
Amount of completed vacation ownership units classified as property and equipment 48  
Purchase obligation 481  
Estimated Future Foreclosures    
Inventory [Line Items]    
Land and infrastructure $ 68