Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Contract payment term related to advertising arrangements.

+ References

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+ Details

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- Definition

Discontinued revenue from adjustments of prior period deferred revenue.

+ References

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+ Details

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- Definition

Disposal group, including discontinued operation revenue and income from operations.

+ References

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- Definition

Estimated weighted average life of product.

+ References

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Namespace Prefix:	znga_
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Revenue from Contracts with Customers - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Discontinued online game revenue and income from operations	$ 1,400,000
Discontinued game revenue from adjustments of prior period deferred revenue	0	$ 0		$ 0
Current deferred revenue recognized	$ 240,900,000		$ 630,300,000
Minimum [Member]
Disaggregation Of Revenue [Line Items]
Contract payment term related to advertising arrangements			30 days
Maximum [Member]
Disaggregation Of Revenue [Line Items]
Contract payment term related to advertising arrangements			60 days
Durable Virtual Items
Disaggregation Of Revenue [Line Items]
Estimated weighted average life of product	10 months	10 months	10 months	10 months