Business Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Revenues:
Revenues	$ 1,618		$ 1,426	$ 3,333	$ 2,721
Operating income:
Selling, general, administrative and other	(41)		(38)	(82)	(75)
Restructuring goodwill impairment and other special charges (credits), net				11
Operating income	242		177	469	297
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net:
Equity earnings and gains and losses from unconsolidated ventures, net:	5		7	15	11
Interest expense, net of interest income of $1, $0, $1 and $1	(61)		(52)	(110)	(106)
Gain (loss) on asset dispositions and impairments, net	(1)	7	2	(8)	(31)
Income from continuing operations before taxes and noncontrolling interests	185		134	366	171
Capital expenditures:
Total capital expenditures	88		114	168	203
Assets :
Total assets	8,989			8,989		9,560
Hotel [Member]
Revenues:
Revenues	1,261		1,238	2,421	2,341
Operating income:
Operating income	212		186	353	308
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net:
Equity earnings and gains and losses from unconsolidated ventures, net:	5		5	14	9
Capital expenditures:
Total capital expenditures	71		41	124	83
Assets :
Total assets	6,129			6,129		6,162
Vacation ownership and residential [Member]
Revenues:
Revenues	357		188	912	380
Operating income:
Operating income	71		29	187	64
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net:
Equity earnings and gains and losses from unconsolidated ventures, net:	0		2	1	2
Capital expenditures:
Total capital expenditures	(1)		47	8	76
Assets :
Total assets	1,684			1,684		2,207
Segment operating income [Member]
Operating income:
Operating income	283		215	540	372
Corporate [Member]
Capital expenditures:
Total capital expenditures	18		26	36	44
Assets :
Total assets	$ 1,176			$ 1,176		$ 1,191