Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (37,509)	$ (53,373)	$ (75,067)	$ (49,329)
Other comprehensive loss:
Foreign currency translation adjustments, net of tax	(8,482)	2,110	(12,855)	(1,916)
Comprehensive income (loss)	(45,991)	(51,263)	(87,922)	(51,245)
Comprehensive income (loss) attributable to redeemable noncontrolling interests and noncontrolling interests	(891)	(4,912)	(1,580)	(1,556)
Foreign currency translation adjustments, net of tax attributable to noncontrolling interests	30	150	19	(34)
Comprehensive income (loss) attributable to redeemable noncontrolling interests and noncontrolling interests	(861)	(4,762)	(1,561)	(1,590)
Comprehensive income (loss) attributable to ATAI Life Sciences N.V. stockholders	$ (45,130)	$ (46,501)	$ (86,361)	$ (49,655)