Business Segment Information (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Revenues:
Revenues	$ 1,426	$ 1,289	$ 2,721	$ 2,476
Operating income:
Total segment operating income	215	178	372	297
Selling, general, administrative and other	(38)	(42)	(75)	(76)
Restructuring and other special credits (charges), net		1		1
Operating income	177	137	297	222
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net:
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net	7	3	11	6
Interest expense, net of interest income of $0, $0, $1 and $1	(52)	(59)	(106)	(121)
Gain (loss) on asset dispositions and impairments, net	2	20	(31)	21
Income from continuing operations before taxes and noncontrolling interest	134	101	171	128
Capital expenditures:
Total capital expenditures	114	101	203	160
Assets :
Total assets	9,999		9,999		9,776
Business Segment and Geographical Information (Textuals) [Abstract]
Property plant and equipment expenditures	114	101	203	160
Hotel [Member]
Revenues:
Revenues	1,238	1,114	2,341	2,130
Operating income:
Total segment operating income	186	151	308	245
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net:
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net	5	2	9	5
Capital expenditures:
Total capital expenditures	41	61	83	83
Assets :
Total assets	6,556		6,556		6,440
Business Segment and Geographical Information (Textuals) [Abstract]
Segment Reporting Information, Investment in Equity Method Investees	265		265		285
Property plant and equipment expenditures	41	61	83	83
Vacation Ownership & Residential [Member]
Revenues:
Revenues	188	175	380	346
Operating income:
Total segment operating income	29	27	64	52
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net:
Equity earnings (losses) and gains and (losses) from unconsolidated ventures, net	2	1	2	1
Capital expenditures:
Total capital expenditures	47	36	76	70
Assets :
Total assets	2,222		2,222		2,139
Business Segment and Geographical Information (Textuals) [Abstract]
Segment Reporting Information, Investment in Equity Method Investees	29		29		27
Property plant and equipment expenditures	47	36	76	70
Corporate [Member]
Capital expenditures:
Total capital expenditures	26	4	44	7
Assets :
Total assets	1,221		1,221		1,197
Business Segment and Geographical Information (Textuals) [Abstract]
Property plant and equipment expenditures	26	4	44	7
Property plant and equipment expenditures
Capital expenditures:
Total capital expenditures	79	46	141	70
Business Segment and Geographical Information (Textuals) [Abstract]
Property plant and equipment expenditures	$ 79	$ 46	$ 141	$ 70