CONSOLIDATED STATEMENTS OF SHAREHOLDERS' DEFICIT - USD ($)	Total	Approved plan	Members' capital	Stagwell Inc. Shareholders' Equity	Stagwell Inc. Shareholders' Equity Approved plan	Common Shares Common Class A & B	Common Shares Common Class A & B Approved plan	Common Shares Class C	Paid-in Capital	Paid-in Capital Approved plan	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning balance at Dec. 31, 2019	$ 348,537,000		$ 316,960,000	$ 316,960,000									$ 31,577,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income prior to reorganization	74,587,000		56,356,000	56,356,000									18,231,000
Other comprehensive loss	(2,785,000)		(2,785,000)	(2,785,000)
Contributions	(95,434,000)		(95,434,000)	(95,434,000)
Distributions, net	(115,543,000)		(108,468,000)	(108,468,000)									(7,075,000)
Changes in redemption value	(128,000)		(128,000)	(128,000)
Other	(1,559,000)		1,387,000	1,387,000									(2,946,000)
Ending balance at Dec. 31, 2020			$ 358,756,000
Balance (in shares) at Dec. 31, 2020						358,756,000
Balance at Dec. 31, 2020	398,543,000			358,756,000									39,787,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss	(5,278,000)
Changes in redemption value	3,834,000
Reclass NCI to Liability	(8,475,000)												(8,475,000)
Balance (in shares) at Dec. 31, 2021						118,252,000		179,970,000
Balance at Dec. 31, 2021	879,040,000			370,753,000		$ 118,000		$ 2,000	$ 382,893,000		$ (6,982,000)	$ (5,278,000)	508,287,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				27,269,000
Net income prior to reorganization	57,707,000
Other comprehensive loss	(33,663,000)			(33,663,000)								(33,663,000)
Distributions to noncontrolling interests	(29,957,000)												(29,957,000)
Changes in redemption value	(8,711,000)
Purchases of noncontrolling interests	4,600,000			1,000,000					1,000,000				3,600,000
Acquisition of noncontrolling interest	2,667,000												2,667,000
Stock Issued During Period, Shares, Acquisitions						175,000
Stock Issued During Period, Value, Acquisitions	1,178,000			1,178,000					1,178,000
Changes in redemption value of RNCI	8,711,000			8,711,000							8,711,000
Restricted Awards Granted or Vested (in shares)						3,940,000
Restricted awards granted or vested	0					$ (4,000)			(4,000)
Shares acquired and cancelled (in shares)						(2,531,000)	(7,194,000)
Shares acquired and cancelled	(18,732,000)	$ (51,547,000)		(18,732,000)	$ (51,547,000)	$ (3,000)	$ (7,000)		(18,729,000)	$ (51,540,000)
Restricted shares forfeited						(221,000)
Stock-based compensation	34,974,000			34,974,000					34,974,000
Conversion of shares (in shares)						19,061,000		(19,061,000)
Conversion of Class C to Class A shares	0			47,930,000		$ 19,000			47,911,000				(47,930,000)
Finalization of MDC acquisition accounting	(13,993,000)			(16,294,000)					(16,294,000)				2,301,000
Other, Shares						242,000
Other	(6,621,000)			(6,512,000)		$ (1,000)			(6,960,000)		447,000		(109,000)
Balance (in shares) at Dec. 31, 2022						131,724,000		160,909,000
Balance at Dec. 31, 2022	$ 944,634,000			$ 482,537,000		$ 132,000		$ 2,000	$ 491,899,000		$ 29,445,000	$ (38,941,000)	$ 462,097,000