Acquisitions - Summary of the Fair Value of Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Apr. 20, 2021	May 19, 2020	Apr. 06, 2020	Jan. 31, 2020	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill					$ 997,661	$ 249,773
Adjust GmbH
Business Acquisition [Line Items]
Cash and cash equivalents	$ 12,155
Accounts receivable and other current assets	21,840
Goodwill	776,147
Operating lease right-of-use assets	8,130
Property, equipment and other tangible assets	1,897
Finance lease right-of-use assets	43,156
Other assets	3,191
Accounts payable, accrued liabilities and other liabilities	(15,540)
Deferred revenue	(5,600)
Operating lease liabilities	(8,130)
Finance lease liabilities	(43,156)
Deferred income tax liability	(66,273)
Total purchase consideration	967,817
Adjust GmbH | Customer Relationships
Business Acquisition [Line Items]
Intangible assets	$ 155,000
Estimated useful life	12 years
Adjust GmbH | Developed Technology
Business Acquisition [Line Items]
Intangible assets	$ 77,000
Estimated useful life	6 years
Adjust GmbH | Tradename
Business Acquisition [Line Items]
Intangible assets	$ 8,000
Estimated useful life	5 years
Geewa A S
Business Acquisition [Line Items]
Cash and cash equivalents				$ 1,043
Accounts receivable and other current assets				1,457
Goodwill				9,805
Property, equipment and other tangible assets				369
Accounts payable, accrued liabilities and other liabilities				(4,935)
Total purchase consideration				25,629
Geewa A S | Developed Technology
Business Acquisition [Line Items]
Intangible assets				$ 590
Estimated useful life				2 years
Geewa A S | Tradename
Business Acquisition [Line Items]
Intangible assets				$ 260
Estimated useful life				5 years
Geewa A S | Apps
Business Acquisition [Line Items]
Intangible assets				$ 17,040
Estimated useful life				5 years
Redemption Games
Business Acquisition [Line Items]
Cash and cash equivalents			$ 2,787
Accounts receivable and other current assets			1,850
Goodwill			20,198
Accounts payable			(2,492)
Other liabilities			(11,142)
Total purchase consideration			56,232
Redeemable noncontrolling interest			(2,556)
Total purchase consideration, net			53,676
Redemption Games | Tradename
Business Acquisition [Line Items]
Intangible assets			$ 900
Estimated useful life			5 years
Redemption Games | Other tangible assets
Business Acquisition [Line Items]
Intangible assets			$ 131
Redemption Games | Apps
Business Acquisition [Line Items]
Intangible assets			$ 44,000
Estimated useful life			5 years
Machine Zone
Business Acquisition [Line Items]
Cash and cash equivalents		$ 37,767
Accounts receivable and other current assets		27,284
Goodwill		82,353
Operating lease right-of-use assets		125,639
Property, equipment and other tangible assets		42,312
Accounts payable, accrued liabilities and other liabilities		(81,591)
Deferred revenue		(43,200)
License obligation		(35,685)
Operating lease liabilities		(139,875)
Total purchase consideration		328,555
Machine Zone | Tradename
Business Acquisition [Line Items]
Intangible assets		$ 13,000
Estimated useful life		10 years
Machine Zone | Apps
Business Acquisition [Line Items]
Intangible assets		$ 272,000
Machine Zone | Apps | Minimum
Business Acquisition [Line Items]
Estimated useful life		3 years
Machine Zone | Apps | Maximum
Business Acquisition [Line Items]
Estimated useful life		5 years
Machine Zone | Intellectual property License
Business Acquisition [Line Items]
Intangible assets		$ 28,551
Estimated useful life		2 years