Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 55,591	$ 33,844	$ 80,960	$ 48,438
Other comprehensive income:
Foreign currency translation (loss) gain	(213,468)	46,173	(261,883)	16,784
Gain on derivative instruments, net of tax of $16,540, $0, $16,540 and $0, respectively	23,919		23,919
Other comprehensive (loss) income	(189,549)	46,173	(237,964)	16,784
Comprehensive (loss) income	(133,958)	80,017	(157,004)	65,222
Comprehensive loss attributable to noncontrolling interests	854		1,173
Comprehensive (loss) income attributable to Acadia Healthcare Company, Inc.	$ (133,104)	$ 80,017	$ (155,831)	$ 65,222