Commitments and Contingencies - Additional Information (Detail)								1 Months Ended	9 Months Ended	38 Months Ended
	Sep. 20, 2016 USD ($)	Apr. 04, 2014 Case	Apr. 04, 2013 Case	Mar. 11, 2013 Case	Nov. 19, 2012 Case	Aug. 16, 2012 Case	Aug. 03, 2012 Case	Jun. 30, 2013 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($) Case
Loss Contingencies [Line Items]
Line of credit facility, initiation date									Jul. 31, 2011
Line of credit facility maximum borrowing capacity | $								$ 1,000,000,000
Line of credit facility commitment fee amount | $								$ 600,000
Amount drawn down under credit facility | $									$ 0	$ 0
Litigation settlement | $	$ 10,000,000
Delaware [Member]
Loss Contingencies [Line Items]
Claims filed | Case				1
Claims settled | Case					1
Lee v. Pincus [Member] | Delaware [Member]
Loss Contingencies [Line Items]
Claims filed | Case			1
Stockholder Derivative Lawsuits [Member]
Loss Contingencies [Line Items]
Claims filed | Case										8
Zynga Shareholder Derivative Litigation [Member] | San Francisco [Member]
Loss Contingencies [Line Items]
Claims filed | Case							3
Zynga Inc. Derivative Litigation [Member] | Northern California [Member]
Loss Contingencies [Line Items]
Claims filed | Case						4
Sandys v. Pincus [Member] | Delaware [Member]
Loss Contingencies [Line Items]
Claims filed | Case		1
Amended Credit Facility [Member]
Loss Contingencies [Line Items]
Line of credit facility, extended maturity								2018-06
Line of credit facility maximum borrowing capacity | $								$ 200,000,000
Line of credit facility additional up-front fees | $								300,000
Line of credit facility commitment fee amount | $								$ 100,000
Line of credit facility frequency of commitment fee payment									Quarterly
Line of credit facility, interest rate description									The interest rate for the amended credit facility is determined based on a formula using certain market rates, as described in the amended credit agreement.