Name:	atvi_IncomeTaxLineItems
Namespace Prefix:	atvi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Tax benefit related to the indemnification amount associated with the repurchase of stock recorded in Other Assets.

+ References

No definition available.

+ Details

Name:	atvi_IndemnificationAssetRecordedInOtherAssets
Namespace Prefix:	atvi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Tax benefit related to the indemnification amount associated with the repurchase of stock recorded as a reduction to the consideration paid for the shares repurchased in Treasury Stock.

+ References

No definition available.

+ Details

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

- Definition

This element represents the tax-effected portion of a one-time federal net operating loss allocation to the Company from the Purchase Transaction between a majority shareholder and the Company.

+ References

No definition available.

+ Details

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

- Definition

This element represents the amount of the NOL utilized in the current period, as a result of NOLs assumed associated with the repurchase of stock.

+ References

No definition available.

+ Details

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

- Definition

The maximum indemnification amount obtained, related to to the potential nonexistence or the disallowance of claimed utilization of NOL carryforwards.

+ References

No definition available.

+ Details

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

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6515339

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

+ Details

Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Name:	us-gaap_OperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	atvi_NetOperatingLossAllocationAxis=atvi_NewVHMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=atvi_ExpectedMember
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Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Oct. 11, 2013
Income Tax [Line Items]
Potential Future Tax Benefit	$ 98us-gaap_IncomeTaxExpenseBenefit	$ 83us-gaap_IncomeTaxExpenseBenefit
New VH
Income Tax [Line Items]
Net Operating Loss Carryforwards			760
Net operating loss utilized - New VH NOL	152
Net Operating Loss Carryforward Indemnification Amount Obtained			200
Net Operating Loss tax attribute received from Purchase Transaction	53
Indemnification asset recorded in other assets	121
Indemnification asset recorded in treasury stock	121
Expected \| New VH
Income Tax [Line Items]
Potential Future Tax Benefit			$ (266)