Business Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues:
Revenues	$ 1,531	$ 1,372	$ 1,426	$ 1,295	$ 1,340	$ 1,255	$ 1,289	$ 1,187	$ 5,624	$ 5,071	$ 4,696
Operating income:
Selling, general, administrative and other									(156)	(151)	(139)
Restructuring, goodwill impairment and other special charges, net									(68)	75	(379)
Operating income									630	600	26
Equity earnings and gains and losses from unconsolidated ventures, net:
Equity earnings and gains and losses from unconsolidated ventures, net:									11	10	(4)
Interest expense, net of interest income of $3, $2 and $3									(216)	(236)	(227)
Gain (loss) on asset dispositions and impairments, net										(39)	(91)
Income (loss) from continuing operations before taxes and noncontrolling interests									425	335	(296)
Depreciation and Amortization:
Depreciation and amortization									265	285	309
Capital expenditures:
Total capital expenditures									477	377	343
Assets :
Total assets	9,560				9,776				9,560	9,776
Hotel [Member]
Revenues:
Revenues									4,756	4,383	4,022
Operating income:
Operating income									694	571	471
Equity earnings and gains and losses from unconsolidated ventures, net:
Equity earnings and gains and losses from unconsolidated ventures, net:									8	8	(5)
Depreciation and Amortization:
Depreciation and amortization									191	207	229
Capital expenditures:
Total capital expenditures									283	184	171
Assets :
Total assets	6,162				6,440				6,162	6,440
Vacation Ownership & Residential [Member]
Revenues:
Revenues									868	688	674
Operating income:
Operating income									160	105	73
Equity earnings and gains and losses from unconsolidated ventures, net:
Equity earnings and gains and losses from unconsolidated ventures, net:									3	2	1
Depreciation and Amortization:
Depreciation and amortization									22	27	27
Capital expenditures:
Total capital expenditures									70	151	145
Assets :
Total assets	2,207				2,139				2,207	2,139
Segment operating income [Member]
Operating income:
Operating income									854	676	544
Corporate [Member]
Depreciation and Amortization:
Depreciation and amortization									52	51	53
Capital expenditures:
Total capital expenditures									124	42	27
Assets :
Total assets	$ 1,191				$ 1,197				$ 1,191	$ 1,197