Segment Information - Revenues, Adjusted Ebitda, Ebitda from Unconsolidated Ventures, Capital Expenditures, Total Assets, and Investments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Operating Segments	Sep. 30, 2012 Operating Segments	Sep. 30, 2013 Operating Segments	Sep. 30, 2012 Operating Segments	Sep. 30, 2013 Americas Operating Segments	Sep. 30, 2012 Americas Operating Segments	Sep. 30, 2013 Americas Operating Segments	Sep. 30, 2012 Americas Operating Segments	Sep. 30, 2013 EMEA Operating Segments	Sep. 30, 2012 EMEA Operating Segments	Sep. 30, 2013 EMEA Operating Segments	Sep. 30, 2012 EMEA Operating Segments	Sep. 30, 2013 Vacation ownership & residential Operating Segments	Sep. 30, 2012 Vacation ownership & residential Operating Segments	Sep. 30, 2013 Vacation ownership & residential Operating Segments	Sep. 30, 2012 Vacation ownership & residential Operating Segments	Sep. 30, 2013 United States Americas Operating Segments	Dec. 31, 2012 United States Americas Operating Segments	Sep. 30, 2013 United States Americas Operating Segments Hotels	Sep. 30, 2012 United States Americas Operating Segments Hotels	Sep. 30, 2013 United States Americas Operating Segments Hotels	Sep. 30, 2012 United States Americas Operating Segments Hotels	Sep. 30, 2013 ITALY EMEA Operating Segments	Dec. 31, 2012 ITALY EMEA Operating Segments
Segment Reporting Information [Line Items]
Total revenues	$ 1,508	$ 1,455	$ 4,609	$ 4,788	$ 825	$ 829	$ 2,582	$ 2,896	$ 366	$ 392	$ 1,143	$ 1,221	$ 175	$ 152	$ 459	$ 410	$ 197	$ 204	$ 736	$ 1,026			$ 251	$ 269	$ 693	$ 840
Gross inventory capital expenditures less cost of sales																	(13)	(7)	(33)	(10)
Development capital																	7	6	15	17
Segment of long-lived assets																					$ 1,500	$ 1,600					$ 370	$ 366