AUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Comprehensive income (loss)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	$ 25,044	$ 41,642	$ 50,044
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other comprehensive income (loss) - Foreign currency translation adjustment	(27,699)	7,996	(37,773)
Other comprehensive income - Benefit plan adjustment, net of tax	1,424	338	4,088
Comprehensive income (loss) for the period	(1,231)	49,976	16,359
Comprehensive income attributable to the noncontrolling and redeemable noncontrolling interests	(7,216)	(47,431)	(6,640)
Comprehensive income (loss) attributable to Stagwell Inc. common shareholders	$ (8,447)	$ 2,545	$ 9,719