Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended				6 Months Ended
		Jan. 02, 2019	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Weighted average amortization period of acquired intangible assets							4 years 4 months 24 days
Total revenue			$ 306,500		$ 217,045		$ 571,903	$ 425,277
Net income (loss)			(55,830)	$ (128,828)	(911)	$ 5,609	$ (184,658)	4,698
Noncompetition Agreements [Member]
Business Acquisition [Line Items]
Weighted average amortization period of acquired intangible assets							1 year 6 months
Common Class A [Member]
Business Acquisition [Line Items]
Net income (loss)			$ (55,830)		$ (911)		$ (184,658)	$ 4,698
Small Giant [Member]
Business Acquisition [Line Items]
Business acquisition effective date of acquisition		Jan. 02, 2019
Percentage of acquired equity interest		80.00%	100.00%				100.00%
Business acquisition, cost of acquired entity		$ 715,500
Percentage of potential consideration acquired		20.00%
Business acquisition, cost of acquired entity upfront cash paid		$ 333,600
Business acquisition, retained in escrow		$ 30,000
Business acquisition, escrow period		18 months
Fair value of Zynga Stock Consideration issued	[1]	$ 253,903
Consideration consideration		$ 98,000
Percentage of step in period equity interest acquired		20.00%
Business acquisition cash consideration payable step in period		3 years
Weighted average amortization period of acquired intangible assets		5 years 3 months 18 days
Total revenue			$ 37,000				$ 49,900
Net income (loss)			(27,900)				(70,800)
Small Giant [Member] | General and Administrative Expense [Member]
Business Acquisition [Line Items]
Professional fees and transaction taxes			200				7,600
Small Giant [Member] | Research and Development Expense [Member]
Business Acquisition [Line Items]
Contingent consideration obligation, expense recognized			$ 26,600				$ 85,600
Small Giant [Member] | Maximum [Member]
Business Acquisition [Line Items]
Preliminary measurement period		1 year
Small Giant [Member] | Noncompetition Agreements [Member]
Business Acquisition [Line Items]
Intangible assets, useful life		3 years
Small Giant [Member] | Common Class A [Member]
Business Acquisition [Line Items]
Business acquisition consideration by shares		63,794,746

[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.}