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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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Amount of cost for defined contribution plan.

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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

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Percentage employer matches of the employee's percentage contribution matched.

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Defined Contribution Plan, Employer Matching Contribution, Graded Vesting Schedule, Period

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