Acquisitions - Schedule of Acquisition Price Allocation (Detail) - USD ($) $ in Thousands		Dec. 31, 2019	Jan. 02, 2019	Dec. 31, 2018	May 25, 2018	Dec. 31, 2017
Intangible assets, net:
Goodwill		$ 1,460,933		$ 934,187		$ 730,464
Small Giant [Member]
Business Acquisition [Line Items]
Cash			$ 34,193
Accounts receivable, net			22,974
Prepaid expenses			2,561
Intangible assets, net:
Goodwill			531,187
Property and equipment, net			180
Right-of-use assets			883
Other non-current assets			120
Total assets acquired			779,098
Accounts payable			(1,716)
Income tax payable			(5,623)
Operating lease liabilities			(380)
Other current liabilities			(15,565)
Deferred tax liabilities, net			(37,400)
Non-current operating lease liabilities			(503)
Total liabilities			(61,187)
Total purchase consideration			717,911
Fair value of Zynga Stock Consideration issued(1)	[1]		(253,903)
Non-current contingent consideration payable			(98,000)
Total cash consideration, including cash held in escrow			366,008
Accounts receivable, net			22,974
Small Giant [Member] | Developed Technology, Useful Life of 5 Years [Member]
Intangible assets, net:
Intangible assets, net:			155,000
Small Giant [Member] | Trade Names, Useful Life of 7 Years [Member]
Intangible assets, net:
Intangible assets, net:			$ 32,000
Gram Games [Member]
Business Acquisition [Line Items]
Cash					$ 8,474
Accounts receivable, net					10,747
Prepaid expenses					279
Intangible assets, net:
Goodwill					224,289
Property and equipment, net					898
Other non-current assets					329
Total assets acquired					329,453
Accounts payable					(8,874)
Income tax payable					(502)
Other current liabilities					(5,164)
Deferred tax liabilities, net					(15,499)
Total liabilities					(30,039)
Total purchase consideration					299,414
Non-current contingent consideration payable					(43,500)
Total cash consideration, including cash held in escrow					255,914
Accounts receivable, net					10,747
Other current assets					937
Gram Games [Member] | Developed Technology, Useful Life of 5 Years [Member]
Intangible assets, net:
Intangible assets, net:					43,000
Gram Games [Member] | Trade Names, Useful Life of 7 Years [Member]
Intangible assets, net:
Intangible assets, net:					14,000
Gram Games [Member] | Developed Technology, Useful Life of 3 Years [Member]
Intangible assets, net:
Intangible assets, net:					26,000
Gram Games [Member] | Trade Names, Useful Life of 3 Years [Member]
Intangible assets, net:
Intangible assets, net:					$ 500

[1] ^{The fair value of the Zynga Stock Consideration above is estimated based on the total shares issued of 63,794,746 and the closing stock price of Zynga’s Common A stock on January 2, 2019 of $3.98 per share.}