Reduction to shareholders' equity, as a result of the shareholders settlement, associated with the repurchase of stock.

No definition available.

Name:	atvi_AdjustmentsToShareholdersEquityRelatedToSettlement
Namespace Prefix:	atvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of letters of credit that can be issued, subject to the availability of the revolving credit facility.

+ References

No definition available.

+ Details

Name:	atvi_AvailabilityForLettersOfCredit
Namespace Prefix:	atvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

This element represents the number irrevocable standby letters of credit the company maintains.

+ References

No definition available.

+ Details

Name:	atvi_NumberOfStandbyLettersOfCredit
Namespace Prefix:	atvi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The value (monetary amount) to be paid to specific parties from the total settlement amount.

+ References

No definition available.

+ Details

Name:	atvi_PaymentsFromSettlementFund
Namespace Prefix:	atvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of letters of credit that have been issued and are required by an inventory manufacturer.

+ References

No definition available.

+ Details

Name:	atvi_StandbyLettersOfCredit
Namespace Prefix:	atvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LitigationCaseAxis=atvi_PacchiaCaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_StandbyLettersOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CurrencyAxis=currency_EUR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies (Details)	1 Months Ended	12 Months Ended
Commitments and Contingencies (Details)	Jul. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) letter_of_credit	Dec. 31, 2015 EUR (€)	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)	Oct. 11, 2013 USD ($)
Loss Contingencies [Line Items]
Adjustments To Shareholders Equity Related To Settlement		$ 202,000,000
PacchiaCase
Loss Contingencies [Line Items]
Adjustments To Shareholders Equity Related To Settlement	$ 202,000,000
Payments From Settlement Fund	$ 202,000,000
Revolver
Loss Contingencies [Line Items]
Amount of letters of credit that can be issued under the Revolver		50,000,000				$ 50,000,000
Letters of credit issued		$ 0
Standby letters of credit
Loss Contingencies [Line Items]
Number of irrevocable standby letters of credit \| letter_of_credit		2
Standby letters of credit \| Denominated in US dollars
Loss Contingencies [Line Items]
Letters of credit issued		$ 0		$ 0
Standby letters of credit		8,000,000		10,000,000
Standby letters of credit \| Denominated in Euros
Loss Contingencies [Line Items]
Letters of credit issued \| €			€ 0		€ 0
Standby letters of credit		$ 3,000,000	€ 3,000,000	$ 1,000,000	€ 1,000,000