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Employee Benefit Arrangements - Defined Contribution Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Retirement Benefits [Abstract] |  |  |
Company match, percentage | 6.00% |  |
Matching contributions, graded vesting schedule, period | 4 years |  |
Cost recognized for defined contribution pension plans | $ 57 | $ 51 | $ 44
Pension Plan |  |  |
Retirement Benefits [Abstract] |  |  |
Defined Benefit Plan, Amounts Recognized in Accumulated Other Comprehensive Income (Loss) | 0 | 0 |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Defined Benefit Plan, Amounts Recognized in Accumulated Other Comprehensive Income (Loss) | $ 0 | $ 0 |

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition Defined Benefit Plan, Amounts Recognized in Accumulated Other Comprehensive Income (Loss) + References No definition available. + Details
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- Definition Defined Contribution Plan, Employer Matching Contribution, Graded Vesting Schedule, Period + References No definition available. + Details
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- Details
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