Overview and Summary of Significant Accounting Policies - Additional Information (Detail)		3 Months Ended		9 Months Ended	12 Months Ended
	Jan. 02, 2016	Sep. 30, 2016 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) Segment Business Financial_Institution $ / shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($)
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Initial offering period					December 2011
Increase in revenue and income from operations						$ 1,000,000
Decrease in revenue and income from operations					$ 100,000
Revenue and income from operations					$ 4,000,000	$ 9,900,000
Impact on reported earnings per share | $ / shares					$ 0	$ 0.01
Operating segment | Segment					1
Number of business activities performed | Business					1
Amortization of intangible assets					$ 29,000,000	$ 27,400,000	$ 24,600,000
Impairments of marketable securities					0
Equity method investment					0
Impairment of intangible assets					$ 20,677,000
Expected dividend yield					0.00%	0.00%	0.00%
Number of financial institutions in which cash, cash equivalents and securities held | Financial_Institution					3
Advertising expense					$ 132,500,000	$ 128,900,000	$ 101,700,000
Facebook [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Entity wide accounts receivables major customer percentage					12.00%	17.00%
Apple [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Entity wide accounts receivables major customer percentage					27.00%	17.00%
Google [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Entity wide accounts receivables major customer percentage					23.00%	14.00%
Zynga Stock Options [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Contractual term					10 years
Other Income [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Gain on sale of equity method investment			$ 6,200,000
Purchased Technology [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Amortization of intangible assets					$ 24,400,000	$ 23,900,000	21,400,000
Acquired Intangible Assets [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Impairment of intangible assets						$ 0	$ 0
Developed Technology [Member] | Rising Tide [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Impairment of intangible assets		$ 18,200,000		$ 18,200,000
Developed Technology [Member] | Zindagi [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Estimated useful lives of intangible assets	3 years
Impairment of intangible assets		$ 2,400,000		$ 2,400,000
Facebook Credits [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Percentage of revenue recognized price					70.00%
Minimum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Probability of an inactive player not to return to a specific game percentage					80.00%
Estimated useful lives of intangible assets					12 months
Option grants vesting period					4 years
Option grants vesting percentage					20.00%
Period over which stock options vest on monthly basis					36 months
Maximum [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Estimated useful lives of intangible assets					60 months
Option grants vesting period					5 years
Option grants vesting percentage					25.00%
Period over which stock options vest on monthly basis					48 months