Vacation Ownership Notes Receivable - Balances of VOI Notes Receivable by Brand and by FICO Score (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Accounts Notes And Loans Receivable [Line Items]
Total receivables	$ 713	$ 719
Sheraton [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	362	364
Westin [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	330	334
Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	21	21
700+ [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	361	366
700+ [Member] | Sheraton [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	155	156
700+ [Member] | Westin [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	195	199
700+ [Member] | Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	11	11
600-699 [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	222	224
600-699 [Member] | Sheraton [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	129	130
600-699 [Member] | Westin [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	90	91
600-699 [Member] | Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	3	3
Less than 600 [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	25	26
Less than 600 [Member] | Sheraton [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	18	19
Less than 600 [Member] | Westin [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	7	7
Less than 600 [Member] | Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables
No Score [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	105	103
No Score [Member] | Sheraton [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	60	59
No Score [Member] | Westin [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	38	37
No Score [Member] | Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Total receivables	$ 7	$ 7