Segment Information (Tables)

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	Twelve Months Ended December 31,
	2021		2020
Revenue:	(Dollars in Thousands)
Integrated Agencies Network	$	819,758	$	229,646
Media Network	374,930		254,311
Communications Network	248,832		382,815
All Other	25,843		21,260
Total Revenue	$	1,469,363	$	888,032
Adjusted EBITDA:
Integrated Agencies Network	$	166,768	$	42,360
Media Network	62,770		27,669
Communications Network	45,527		78,562
All Other	(769)		(1,893)
Corporate	(20,644)		(3,530)
Total Adjusted EBITDA	$	253,652	$	143,168
Depreciation and amortization	$	(77,503)	$	(41,025)
Impairment and other losses	(16,240)		—
Stock-based compensation	(75,032)		—
Deferred acquisition consideration	(18,721)		(4,497)
Other items, net	(21,430)		(13,906)
Total Operating Income	$	44,726	$	83,740

	Twelve Months Ended December 31,
	2021		2020
	(Dollars in Thousands)
Other Income (expenses):
Interest expense, net	$	(31,894)	$	(6,223)
Foreign exchange, net	(3,332)		(721)
Gain on sale of business and other, net	50,058		544
Income before income taxes and equity in earnings of non-consolidated affiliates	59,558		77,340
Income tax expense	23,398		5,937
Income before equity in earnings of non-consolidated affiliates	36,160		71,403
Equity in (income) losses of non-consolidated affiliates	(240)		58
Net income	35,920		71,461
Net income attributable to noncontrolling and redeemable noncontrolling interests	(14,884)		(15,105)
Net income attributable to Stagwell Inc. common shareholders	$	21,036	$	56,356
Depreciation and amortization:
Integrated Agencies Network	$	40,087	$	9,616
Media Network	23,590		19,861
Communications Network	7,553		5,903
All Other	2,498		3,681
Corporate	3,775		1,964
Total	$	77,503	$	41,025
Stock-based compensation:
Integrated Agencies Network	$	47,584	$	—
Media Network	4,857		—
Communications Network	15,928		—
All Other	39		—
Corporate	6,624		—
Total	$	75,032	$	—