GOODWILL AND OTHER INTANGIBLE ASSETS - Itangible assets with definite lives (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Other intangible assets
Cost	$ 656		$ 656		$ 656
Accumulated Amortization	(326)		(326)		(317)
Net	330		330		339
Amortization expense for intangible assets	5	$ 5	10	$ 8
Customer relationships
Other intangible assets
Cost	287		287		287
Accumulated Amortization	(140)		(140)		(137)
Net	147		147		150
Purchase Agreements
Other intangible assets
Cost	76		76		76
Accumulated Amortization	(76)		(76)		(76)
Resort Management Contracts
Other intangible assets
Cost	245		245		245
Accumulated Amortization	(64)		(64)		(58)
Net	181		181		187
Technology
Other intangible assets
Cost	25		25		25
Accumulated Amortization	(25)		(25)		(25)
Other
Other intangible assets
Cost	23		23		23
Accumulated Amortization	(21)		(21)		(21)
Net	$ 2		$ 2		$ 2