Securitized Vacation Ownership Debt - Long-Term and Short-Term Securitized Vacation Ownership Debt (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long term debt including current maturities	$ 533	$ 532
Less current maturities	(150)	(130)
Long-term debt	383	402
2005 securitization, interest rates ranging from 5.25% to 6.29%, maturing 2013 [Member]
Debt Instrument [Line Items]
Long term debt including current maturities	22	37
Interest rate minimum	5.25%	5.25%
Interest rate maximum	6.29%	6.29%
Maturity year of update instrument	2013	2013
2006 securitization, interest rates ranging from 5.28% to 5.85%, maturing 2018 [Member]
Debt Instrument [Line Items]
Long term debt including current maturities	18	27
Interest rate minimum	5.28%	5.28%
Interest rate maximum	5.85%	5.85%
Maturity year of update instrument	2018	2018
2009 securitization, interest rate at 5.81%, maturing 2015 [Member]
Debt Instrument [Line Items]
Long term debt including current maturities	63	92
Interest rate, stated rate	5.81%	5.81%
Maturity year of update instrument	2015	2015
2010 securitization, interest rates ranging from 3.65% to 4.75%, maturing 2021 [Member]
Debt Instrument [Line Items]
Long term debt including current maturities	138	190
Interest rate minimum	3.65%	3.65%
Interest rate maximum	4.75%	4.75%
Maturity year of update instrument	2021	2021
2011 securitization, interest rates ranging from 3.67% to 4.82%, maturing 2026 [Member]
Debt Instrument [Line Items]
Long term debt including current maturities	137	186
Interest rate minimum	3.67%	3.67%
Interest rate maximum	4.82%	4.82%
Maturity year of update instrument	2026	2026
2012 securitization, interest rates ranging from 2.00% to 2.76%, maturing 2024 [Member]
Debt Instrument [Line Items]
Long term debt including current maturities	$ 155
Interest rate minimum	2.00%
Interest rate maximum	2.76%
Maturity year of update instrument	2024	2024