SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2015		Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015		Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 1,999,995	[1]	$ 3,102,901	[1]	$ 2,280,397	[1]	$ 1,840,694	[1]	$ 1,840,097	[1]	$ 2,836,497	[1]	$ 2,123,575	[1]	$ 1,641,802	[1]	$ 9,223,987	$ 8,441,971	$ 6,793,306
Gross profit	1,879,383		2,947,282		2,092,906		1,672,236		1,674,685		2,619,978		1,882,996		1,406,471		8,591,807	7,584,130	5,715,886
Net income	$ 504,269		$ 1,196,732		$ 517,032		$ 333,327		$ 451,831		$ 1,062,253		$ 576,451		$ 331,218		$ 2,551,360	$ 2,421,753	$ 1,892,798
Net income applicable to common stockholders per basic common share	$ 10.14		$ 23.67		$ 10.02		$ 6.42		$ 8.65		$ 20.27		$ 11.00		$ 6.35		$ 50.09	$ 46.30	$ 37.17
Net income applicable to common stockholders per diluted common share	$ 10.00		$ 23.41		$ 9.94		$ 6.36		$ 8.56		$ 20.03		$ 10.89		$ 6.25		$ 49.45	$ 45.67	$ 36.11

[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.