Discontinued Operation - Cash Flows of Discontinued Operations (Detail) - Vistana Vacation Ownership Business [Member] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Discontinued Operating activities
Depreciation and amortization	$ 15	$ 19
(Gain) loss on asset dispositions and impairments, net	214
Stock-based compensation expense	2	2
Decrease (increase) in restricted cash	(23)	30
Securitized VOI notes receivable activity, net	23	38
Unsecuritized VOI notes receivable activity, net	(38)	(36)
Discontinued Investing activities
Purchases of plant, property and equipment	11	$ 15
Proceeds from asset sales, net	$ 98