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Vacation Ownership Notes Receivable - Notes Receivable (Net of Reserves) Related to Vacation Ownership Loans (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Net notes receivable $ 619 $ 614
Notes receivable noncurrent 535 530
Vacation ownership loans - securitized [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Net notes receivable 473 503
Notes receivable, current (63) (65)
Vacation ownership loans - unsecuritized [Member]
   
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Net notes receivable 146 111
Notes receivable, current $ (21) $ (19)