GEOGRAPHIC INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015	[1]	Jun. 30, 2015	[1]	Mar. 31, 2015	[1]	Dec. 31, 2014		Sep. 30, 2014	[1]	Jun. 30, 2014	[1]	Mar. 31, 2014	[1]	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Geographic Information
Revenues	$ 1,999,995	[1]	$ 3,102,901		$ 2,280,397		$ 1,840,694		$ 1,840,097	[1]	$ 2,836,497		$ 2,123,575		$ 1,641,802		$ 9,223,987	$ 8,441,971	$ 6,793,306
Intangible assets, net	2,167,533								2,334,761								2,167,533	2,334,761	1,019,985
Goodwill	3,375,000								3,326,474								3,375,000	3,326,474	1,767,912
Other long-lived assets	331,127								255,639								331,127	255,639	175,622
United States
Geographic Information
Revenues																	1,817,360	1,798,484	1,769,696
Intangible assets, net	2,052,351								2,183,957								2,052,351	2,183,957	838,494
Goodwill	2,742,535								2,712,479								2,742,535	2,712,479	1,247,686
Other long-lived assets	89,656								80,668								89,656	80,668	49,750
The Netherlands
Geographic Information
Revenues																	6,205,116	5,519,207	4,103,393
Intangible assets, net	78,027								108,650								78,027	108,650	123,847
Goodwill	232,982								224,731								232,982	224,731	156,261
Other long-lived assets	138,329								97,056								138,329	97,056	61,164
Other
Geographic Information
Revenues																	1,201,511	1,124,280	920,217
Intangible assets, net	37,155								42,154								37,155	42,154	57,644
Goodwill	399,483								389,264								399,483	389,264	363,965
Other long-lived assets	$ 103,142								$ 77,915								$ 103,142	$ 77,915	$ 64,708

[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.