CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents	$ 220,589	$ 184,009
Accounts receivable, net	645,846	696,937
Expenditures billable to clients	93,077	63,065
Other current assets	71,443	61,830
Total Current Assets	1,030,955	1,005,841
Fixed assets, net	98,878	97,516
Operating Lease, Right-of-Use Asset	273,567	311,654
Goodwill	1,566,956	1,652,723
Other intangible assets, net	907,529	958,782
Other assets	115,447	29,064
Total Assets	3,993,332	4,055,580
Current Liabilities
Accounts payable	357,253	271,769
Accrued media	240,506	237,794
Accruals and other liabilities	248,477	272,533
Advance billings	337,034	361,885
Current portion of lease liabilities - operating leases	76,349	72,255
Current portion of deferred acquisition consideration	90,183	77,946
Total Current Liabilities	1,349,802	1,294,182
Long-term debt	1,184,707	1,191,601
Long-term portion of deferred acquisition consideration	71,140	144,423
Long-term lease liabilities - operating leases	294,049	342,730
Deferred tax liabilities, net	40,109	103,093
Other liabilities	69,780	57,147
Total Liabilities	3,009,587	3,133,176
Redeemable Noncontrolling Interests	39,111	43,364
Commitments and Contingencies
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Paid-in capital	491,899	382,893
Accumulated income (deficit)	29,445	(6,982)
Accumulated other comprehensive loss	(38,941)	(5,278)
Stagwell Inc. Shareholders' Equity	482,537	370,753
Noncontrolling interests	462,097	508,287
Total Shareholders' Equity	944,634	879,040
Liabilities and Equity, Total	3,993,332	4,055,580
Common Class A and Common Class B
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common shares	132	118
Common Class C
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common shares	$ 2	$ 2