GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Geographic Information
Revenues	$ 1,840,097	[1]	$ 2,836,497	[1]	$ 2,123,575	[1]	$ 1,641,802	[1]	$ 1,541,153	[1]	$ 2,269,903	[1]	$ 1,680,238	[1]	$ 1,302,012	[1]	$ 8,441,971	$ 6,793,306	$ 5,260,956
Intangible assets, net	2,334,761								1,019,985								2,334,761	1,019,985	208,113
Goodwill	3,326,474								1,767,912								3,326,474	1,767,912	522,672
Other long-lived assets	255,639								175,622								255,639	175,622	156,582
United States
Geographic Information
Revenues																	1,798,484	1,769,696	1,661,710
Intangible assets, net	2,183,957								838,494								2,183,957	838,494	1,337
Goodwill	2,712,479								1,247,686								2,712,479	1,247,686	37,306
Other long-lived assets	80,668								49,750								80,668	49,750	76,623
The Netherlands
Geographic Information
Revenues																	5,519,207	4,103,393	2,675,976
Intangible assets, net	108,650								123,847								108,650	123,847	137,255
Goodwill	224,731								156,261								224,731	156,261	149,464
Other long-lived assets	97,056								61,164								97,056	61,164	37,035
Other
Geographic Information
Revenues																	1,124,280	920,217	923,270
Intangible assets, net	42,154								57,644								42,154	57,644	69,521
Goodwill	389,264								363,965								389,264	363,965	335,902
Other long-lived assets	$ 77,915								$ 64,708								$ 77,915	$ 64,708	$ 42,924

[1] As the Company's retail accommodation business, which recognizes revenue at the completion of the stay, continues to expand, our quarterly results become increasingly impacted by seasonal factors.