Excess of termination fee received over the book value of contract asset.

No definition available.

Name:	iq_ExcessOfTerminationFeeReceivedOverTheBookValueOfContractAsset
Namespace Prefix:	iq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Finite and indefinite lived intangible assets.

+ References

No definition available.

+ Details

Name:	iq_FiniteAndIndefiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	iq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Traffic acquisition service contract termination fee.

+ References

No definition available.

+ Details

Name:	iq_TrafficAcquisitionServiceContractTerminationFee
Namespace Prefix:	iq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Traffic Acquisition Service Term.

+ References

No definition available.

+ Details

Name:	iq_TrafficAcquisitionServiceTerm
Namespace Prefix:	iq_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Useful life of indefinite lived intangible assets upon conversion to finite lived intangible assets.

+ References

No definition available.

+ Details

Name:	iq_UsefulLifeOfIndefiniteLivedIntangibleAssetsUponConversionToFiniteLivedIntangibleAssets
Namespace Prefix:	iq_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

+ Details

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

- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

+ Details

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

- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, from an acquisition.

+ References

No definition available.

+ Details

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

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

+ Details

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

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=iq_MobileGamesInDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=iq_PurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=iq_ClassBOrdinarySharesMember
Namespace Prefix:
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- Details

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- Details

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Intangible Assets, Net - Summary of Finite-Lived Intangible Assets (Parenthetical) (Details) ¥ in Thousands, $ in Thousands				1 Months Ended				12 Months Ended
	Jul. 17, 2018 CNY (¥)	Jul. 17, 2018 CNY (¥)	Mar. 15, 2010	Feb. 28, 2018 shares	Jan. 31, 2018 CNY (¥)	Jan. 31, 2018 USD ($)	Nov. 30, 2012	Dec. 31, 2018 CNY (¥)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 CNY (¥)
Finite And Indefinite Lived Intangible Assets [Line Items]
Traffic acquisition service term			10 years
Intangible assets								¥ 1,678,193	$ 244,083	¥ 428,005
Indefinite-lived intangible assets								232,298	33,786
Skymoons
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets	¥ 707,000	¥ 707,000
Indefinite-lived intangible assets								¥ 232,298	$ 33,786	¥ 0
Skymoons \| Mobile games in development
Finite And Indefinite Lived Intangible Assets [Line Items]
Intangible assets		¥ 240,000
Skymoons \| Mobile games in development \| Maximum [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Contract asset with useful life		4 years
Traffic Acquisition Agreement
Finite And Indefinite Lived Intangible Assets [Line Items]
Contract asset with useful life							7 years 3 months 18 days	4 years
Traffic acquisition service contract termination fee \| $						$ 27,000
Excess of termination fee received over the book value of contract asset.					¥ 104,200	$ 15,155
Purchase Agreement \| Class B Ordinary Shares
Finite And Indefinite Lived Intangible Assets [Line Items]
Stock issued during period, shares \| shares				36,860,691
Published Mobile Games
Finite And Indefinite Lived Intangible Assets [Line Items]
Contract asset with useful life								2 years
Intangible assets	¥ 366,000
Published Mobile Games \| Skymoons
Finite And Indefinite Lived Intangible Assets [Line Items]
Contract asset with useful life		2 years
Intangible assets		¥ 366,000
Technology \| Skymoons
Finite And Indefinite Lived Intangible Assets [Line Items]
Contract asset with useful life		5 years
Intangible assets		¥ 101,000