Acquisitions - Schedule of Acquisition Price Allocation (Detail) - USD ($) $ in Thousands		Sep. 30, 2020	Jul. 02, 2020		Jul. 01, 2020	Dec. 31, 2019
Intangible assets, net:
Goodwill		$ 2,986,876				$ 1,460,933
Peak [Member]
Business Acquisition [Line Items]
Cash			$ 10,799
Accounts receivable			64,268
Prepaid expenses			1,748
Other current assets			12,646
Intangible assets, net:
Goodwill			1,513,207
Property and equipment			6,791
Right-of-use assets			9,697
Other non-current assets			492
Total assets acquired			2,234,199
Accounts payable			(14,167)
Operating lease liabilities			(2,205)
Other current liabilities			(16,703)
Deferred tax liabilities, net			(108,357)
Non-current operating lease liabilities			(7,492)
Other non-current liabilities			(1,900)
Total liabilities			(150,824)
Total purchase price consideration			2,083,375
Fair value of Zynga Stock Consideration issued(1)			(1,137,673)	[1]	$ (1,100,000)
Total cash consideration(2)	[2]		945,702
Peak [Member] | Developed Technology, Useful Life of 5 Years [Member]
Intangible assets, net:
Intangible assets, net:			495,000
Peak [Member] | Trade Names, Useful Life of 7 Years [Member]
Intangible assets, net:
Intangible assets, net:			115,000
Peak [Member] | Domain Names Weighted Average Useful Life of 14 years [Member]
Intangible assets, net:
Intangible assets, net:			$ 4,551

[1] ^{The fair value of the Zynga Stock Consideration above is estimated based on the total shares issued of 116,564,861 and the closing stock price of Zynga’s Common A stock on July 1, 2020 of $9.76 per share}

[2] ^{The amount shown represents the cash paid at closing (which includes the Escrow Consideration) as well as present value of the Deferred Consideration, which was estimated as $23.8 million at the acquisition date using a discount rate commensurate with the term of the Deferred Consideration of 4.9%}