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Financing Agreements - Additional Information (Details) - USD ($) $ in Millions |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 21, 2025 | Mar. 17, 2015 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | May 01, 2023 | Jan. 23, 2018
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  | $ 2,104 | $ 2,502 |  |  |
Business agreement, term of agreement | 10 years | 10 years |  |  |  |  |
Put option agreement, face amount |  | $ 500 | 100 |  |  |  |
Revolving Credit Agreement |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Utilization |  |  | 0 |  |  |  |
Aetna Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amounts of LOCs outstanding |  |  |  | 12 |  |  |
Revolving Credit Agreement |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Capacity |  |  | $ 500 |  |  |  |
Minimum net worth required for compliance |  |  |  |  |  | $ 4,998 |
Voya Holdings Debentures | Aetna Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Quarterly fee to guarantor of notes if minimum principal balance is not met |  |  | 1.25% |  |  |  |
Collateral amount |  |  | $ 229 | 227 |  |  |
Cash collateral deposited for debt |  |  | 229 | 215 |  |  |
Voya Holdings Debentures | Aetna Notes | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Collateral amount |  |  | 218 | 218 |  |  |
Short-Term Debt | Revolving Credit Agreement |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Capacity |  |  |  |  |  | $ 25 |
Senior Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate on loan | 1.518% |  |  |  |  |  |
Senior Notes | 5.0% Senior Notes, due 2034 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  | 396 | 395 |  |  |
Senior Notes | 3.976% Senior Notes, due 2025 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amount of unsecured notes issued |  |  | $ 400 |  |  |  |
Annual interest rate on loan |  |  | 3.976% |  |  |  |
Long-term debt |  |  | $ 0 | 399 |  |  |
Senior Notes | Pre-Capitalized Trust |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate on loan | 6.012% | 3.976% |  |  |  |  |
Junior Subordinated Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum deferral period for one or more consecutive interest payments |  |  | 5 years |  |  |  |
Junior Subordinated Notes | 4.7% Fixed-to-Floating Rate Junior Subordinated Notes, due 2048 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amount of unsecured notes issued |  |  |  |  |  |  | $ 340
Annual interest rate on loan |  |  | 4.70% |  |  |  | 4.70%
Long-term debt |  |  | $ 336 | 336 |  |  |
Debentures | 7.63% Voya Holdings Inc. debentures, due 2026 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate on loan |  |  | 7.625% |  |  |  |
Long-term debt |  |  | $ 139 | 139 |  |  |
Debentures | 6.97% Voya Holdings Inc. debentures, due 2036 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Annual interest rate on loan |  |  | 6.97% |  |  |  |
Long-term debt |  |  | $ 79 | 79 |  |  |
Debentures | Voya Holdings Debentures |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  | 218 | 218 |  |  |
Revolving Credit Agreement |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amounts of LOCs outstanding |  |  | 0 |  |  |  |
Utilization |  |  | 0 |  |  |  |
Interest expense | Debt securities |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 0 | $ 0 | $ (5) |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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Namespace Prefix: | voya_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Maximum Interest Payment Deferral Period + References No definition available. + Details
Name: | voya_DebtInstrumentMaximumInterestPaymentDeferralPeriod
Namespace Prefix: | voya_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the net cash (outflow) inflow associated with collateral held and delivered. + References No definition available. + Details
Name: | voya_ProceedsFromPaymentsForCollateral
Namespace Prefix: | voya_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Put Option Agreement, Face Amount + References No definition available. + Details
Name: | voya_PutOptionAgreementFaceAmount
Namespace Prefix: | voya_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Quarterly Fee to Guarantor of Notes if Minimum Principal Balance is Not Met + References No definition available. + Details
Name: | voya_QuarterlyFeeToGuarantorOfNotesIfMinimumPrincipalBalanceIsNotMet
Namespace Prefix: | voya_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=voya_AetnaNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_VoyaHoldingsDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_ShortTermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_FivePointZeroPercentSeniorNotesDue2034Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_ThreePointNineSevenSixPercentSeniorNotesDue2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_PreCapitalizedTrustMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_JuniorSubordinatedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_FourPointSevenPercentFixedtoFloatingRateJuniorSubordinatedNotesdue2048Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_SevenPointSixThreePercentVoyaHoldingsInc.Debenturesdue2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DebtInstrumentAxis=voya_SixPointNineSevenPercentVoyaHoldingsInc.Debenturesdue2036Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_InterestExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |