Carrying Values and Fair Values of Non-Current Financial Assets and Liabilities (Detail) (USD $) In Millions	Sep. 09, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	$ 1,102	$ 1,264
Restricted cash	33	30
Non-recourse debt associated with securitized notes receivable	(2,623)	(2,691)
Other long-term liabilities	(952)	(893)
Non Recourse Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-recourse debt associated with securitized notes receivable	(711)	(890)
Non Recourse Debt | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-recourse debt associated with securitized notes receivable	(711)	(890)
Non Recourse Debt | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-recourse debt associated with securitized notes receivable	(749)	(921)
Loans to Timeshare Owners | Securitized Notes Receivable | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	751	910
Loans to Timeshare Owners | Securitized Notes Receivable | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	905	1,097
Senior, Mezzanine and Other Loans | Nonsecuritized Notes Receivable | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	100	184
Senior, Mezzanine and Other Loans | Nonsecuritized Notes Receivable | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	62	130
Loans to Timeshare Owners | Nonsecuritized Notes Receivable | Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	251	170
Loans to Timeshare Owners | Nonsecuritized Notes Receivable | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	272	176
Loans to Timeshare Owners
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes receivable	1,002	1,080
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	33	30
Marketable securities	39	18
Senior Notes	(1,286)	(1,631)
Commercial paper	(403)	0
Other long-term debt	(141)	(142)
Other long-term liabilities	(106)	(71)
Long-term derivative liabilities	(1)	(1)
Carrying Amount | Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investments	31	60
Total long-term financial assets	1,205	1,372
Carrying Amount | Noncurrent Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term financial liabilities	(2,648)	(2,735)
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	33	30
Marketable securities	39	18
Senior Notes	(1,428)	(1,771)
Commercial paper	(403)	0
Other long-term debt	(141)	(138)
Other long-term liabilities	(107)	(67)
Long-term derivative liabilities	(1)	(1)
Fair Value | Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investments	24	63
Total long-term financial assets	1,335	1,514
Fair Value | Noncurrent Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total long-term financial liabilities	$ (2,829)	$ (2,898)