XML 72 R60.htm IDEA: XBRL DOCUMENT
v3.25.3

Fair Value Measurements - Additional Information (Detail) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 USD ($) $ / shares | Sep. 30, 2025 USD ($) $ / shares | Dec. 31, 2024 USD ($)
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items] |  |  |
Class of warrants, exercise price per share | $ / shares | $ 1.38 | $ 1.38 |
Other noncurrent assets | $ 39,189,000 | $ 39,189,000 | $ 4,437,000
Dividend Yield [Member] |  |  |
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items] |  |  |
Dividend yield | 0 | 0 |
Subscription Agreement [Member] |  |  |
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items] |  |  |
Other noncurrent assets | $ 28,000,000 | $ 28,000,000 |
Impairments of privately held securities |  | 0 |
Subscription Agreement [Member] | Convertible Debt Securities Classified as Available-for-sale Investments [Member] |  |  |
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items] |  |  |
Other noncurrent assets | 23,000,000 | 23,000,000 |
Subscription Agreement [Member] | SAFE Investments [Member] |  |  |
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items] |  |  |
Other noncurrent assets | 5,000,000 | 5,000,000 |
Commercial Contract [Member] |  |  |
Schedule Of Changes In The Fair Value Of Warrant Liabilities [Line Items] |  |  |
Revenue recognized from commercial contract | $ 900,000 | $ 900,000 |

X
- Definition Impairments of privately held securities. + References No definition available. + Details
Name: | ionq_ImpairmentsOfPrivatelyHeldSecurities
Namespace Prefix: | ionq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Schedule Of Changes In The Fair Value Of Warrant Liabilities Line Items + References No definition available. + Details
Name: | ionq_ScheduleOfChangesInTheFairValueOfWarrantLiabilitiesLineItems
Namespace Prefix: | ionq_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of noncurrent assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=ionq_SubscriptionAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=ionq_ConvertibleDebtSecuritiesClassifiedAsAvailableForSaleInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=ionq_SAFEInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=ionq_CommercialContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |