UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Comprehensive income (loss)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	$ (5,017)	$ 33,622
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	4,425	(5,347)
Other comprehensive income (loss)	4,425	(5,347)
Comprehensive income (loss) for the period	(592)	28,275
Comprehensive (income) loss attributable to the noncontrolling and redeemable noncontrolling interests	26,723	(20,947)
Comprehensive income attributable to Stagwell Inc. common shareholders	$ 26,131	$ 7,328