Stockholders' Equity - Additional Information (Detail)		3 Months Ended			12 Months Ended
	Nov. 30, 2011 shares	Dec. 31, 2016 USD ($) Voting_Rights $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) Voting_Rights shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, voting rights					Voting Rights. Holders of our Class A common stock are entitled to one vote per share, holders of our Class B common stock are entitled to seven votes per share and holders of our Class C common stock are entitled to 70 votes per share. In general, holders of our Class A common stock, Class B common stock and Class C common stock will vote together as a single class on all matters submitted to a vote of stockholders, unless otherwise required by law. Delaware law could require either our Class A common stock, Class B common stock or our Class C common stock to vote separately as a single class in the following circumstances:  If we were to seek to amend our Certificate of Incorporation to increase the authorized number of shares of a class of stock, or to increase or decrease the par value of a class of stock; and  If we were to seek to amend our Certificate of Incorporation in a manner that altered or changed the powers, preferences or special rights of a class of stock in a manner that affected its holders adversely.
Conversion of stock description					Conversion. Our Class A common stock is not convertible into any other shares of our capital stock. Each share of our Class B common stock and Class C common stock is convertible at any time at the option of the holder into one share of our Class A common stock. In addition, after the closing of the initial public offering, upon sale or transfer of shares of either Class B common stock or Class C common stock, whether or not for value, each such transferred share shall automatically convert into one share of Class A common stock, except for certain transfers described in our amended and restated certificate of incorporation. Our Class B common stock and Class C common stock will convert automatically into Class A common stock on the date on which the number of outstanding shares of Class B common stock and Class C common stock together represent less than 10% of the aggregate combined voting power of our capital stock. Once transferred and converted into Class A common stock, the Class B common stock and Class C common stock may not be reissued.
Maximum percentage of common stock outstanding required for conversion					10.00%
Treasury stock acquired, average cost per share | $ / shares		$ 2.76	$ 2.40	$ 2.60
Stock repurchase program, aggregate number of shares repurchased value		$ 34,200,000	$ 101,900,000	$ 98,900,000
Employee stock ownership Plan (ESOP), method of measuring compensation					The number of shares of our Class A common stock reserved for future issuance under our 2011 Plan will automatically increase on January 1 of each year, beginning on January 1, 2012, and continuing through and including January 1, 2021, by 4% of the total number of shares of our capital stock outstanding as of December 31 of the preceding calendar year.
Total stock-based expense					$ 107,461,000	$ 131,575,000	$ 129,233,000
Total unrecognized stock based compensation expense, stock options		$ 26,200,000			26,200,000
Aggregated intrinsic value of shares exercised					8,100,000	9,100,000	25,100,000
Grant date fair value of options vested					$ 6,000,000	$ 10,200,000	$ 6,600,000
Common stock, shares authorized | shares		2,020,517,000		2,020,517,000	2,020,517,000	2,020,517,000
Restricted Stock Units (ZSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized stock based compensation expense, restricted shares		$ 130,000,000			$ 130,000,000
Weighted average recognition period					3 years
Total stock-based expense					$ 0
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized stock based compensation expense, restricted shares		$ 1,700,000			$ 1,700,000
Weighted average recognition period					1 month 28 days
Zynga Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average recognition period					4 years 5 months 5 days
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Voting rights per share | Voting_Rights		1			1
Repurchase of common stock | shares		12,300,000	42,200,000	37,900,000
Annual increase percentage of common stock shares outstanding					4.00%
Common Class A [Member] | 2011 ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized | shares		73,300,000			73,300,000
Percentage of capital stock outstanding	2.00%
Common stock capital shares reserved for future issuance increases | shares	25,000,000
Share-based compensation arrangement by share-based payment award, maximum employee subscription rate	15.00%
Share based compensation arrangement by share based payment award employee discount rate	85.00%
Employee contributions					$ 2,400,000
Stock-based expense related to 2011 ESPP					$ 1,900,000
Common Class B [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Voting rights per share | Voting_Rights		7			7
Common Class C [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Voting rights per share | Voting_Rights		70			70