Discontinued Operation - Schedule of Classes of Assets and Liabilities for Discontinued Operations (Parenthetical) (Detail) - Vistana Vacation Ownership Business [Member] $ in Millions	Dec. 31, 2015 USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Allowance for doubtful accounts receivable	$ 9
Allowance for doubtful notes receivable	$ 2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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