Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (174,244)	$ (178,625)
Other comprehensive loss:
Foreign currency translation adjustments, net of tax	(14,155)	7,245
Comprehensive income (loss)	(188,399)	(171,380)
Comprehensive income (loss) attributable to redeemable noncontrolling interests and noncontrolling interests	(6,436)	(8,782)
Foreign currency translation adjustments, net of tax attributable to noncontrolling interests	(24)	(13)
Comprehensive loss attributable to redeemable noncontrolling interests and noncontrolling interests	(6,460)	(8,795)
Comprehensive income (loss) attributable to ATAI Life Sciences N.V. stockholders	$ (181,939)	$ (162,585)