Segment Information (Summary Of Segment Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Segment Information [Line Items]
Net revenues	$ 1,343		$ 1,253		$ 2,536		$ 2,387
EBITDA	326		297		556		531
Depreciation and amortization	59		54		115		106
Interest expense	29		34		56		66
Early extinguishment of debt	0		0		0		111
Interest income	(3)		(2)		(5)		(4)
Income before income taxes	241		211		390		252
Provision for income taxes	88		78		146		92
Net income	153		133		244		160
Net income attributable to noncontrolling interest	0		0		(1)		0
Net income attributable to Wyndham shareholders	153		133		243		160
Lodging [Member]
Segment Information [Line Items]
Net revenues	283	[1]	262	[1]	520	[2]	485	[2]
EBITDA	87	[1]	78	[1]	151	[2]	137	[2]
Intersegment trademark fees	11		10		20		18
Management fees	2		1		4		1
Vacation Exchange And Rentals [Member]
Segment Information [Line Items]
Net revenues	402		376		781		750
EBITDA	89		85		174		179
Vacation Ownership [Member]
Segment Information [Line Items]
Net revenues	673		630		1,266		1,179
EBITDA	185		161		300		272
Total Reportable Segments [Member]
Segment Information [Line Items]
Net revenues	1,358		1,268		2,567		2,414
EBITDA	361		324		625		588
Corporate And Other [Member]
Segment Information [Line Items]
Net revenues	(15)	[3]	(15)	[3]	(31)	[3]	(27)	[3]
EBITDA	$ (35)	[3]	$ (27)	[3]	$ (69)	[3]	$ (57)	[3]

[1] Includes $11 million and $10 million of intersegment trademark fees during the three months ended June 30, 2014 and 2013, respectively, which is offset in expenses primarily at the Company's Vacation Ownership segment and are eliminated in Corporate and Other. Additionally, includes $2 million and $1 million of hotel management reimbursable revenues for the three months ended June 30, 2014 and 2013, respectively, which are charged to the Company's Vacation Ownership segment and are eliminated in Corporate and Other.

[2] Includes $20 million and $18 million of intersegment trademark fees during the six months ended June 30, 2014 and 2013, respectively, which is offset in expenses primarily at the Company's Vacation Ownership segment and are eliminated in Corporate and Other. Additionally, includes $4 million and $1 million of hotel management reimbursable revenues during the six months ended June 30, 2014 and 2013, respectively, which are charged to the Company's Vacation Ownership segment and are eliminated in Corporate and Other.

[3] Includes the elimination of transactions between segments.