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Investments - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($) investment	Dec. 31, 2025 USD ($) investment
Investment [Line Items]
Percentage of securities representing gross unrealized losses	7.00%	9.00%
Percentage of gross unrealized losses in a continuous loss position less than twelve months	20.00%	8.00%
Individual securities comprising total gross unrealized losses | investment	2,423	1,827
Approximate percentage, outstanding principal balance of commercial mortgage loans	34.00%
Minimum
Investment [Line Items]
Outstanding balance of commercial mortgage loans (less than)	$ 0.1	$ 0.1
Maximum
Investment [Line Items]
Outstanding balance of commercial mortgage loans (less than)	$ 4.9	$ 5.0

X

- Definition

This represent the percentage of outstanding principal balance of commercial mortgage loans concentrated in the three major states.

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- Definition

The percentage of gross unrealized losses that have been in a loss position for less than twelve months for available for sale securities.

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- Definition

The percentage of total gross unrealized losses to the aggregate fair value of the related available-for-sale securities.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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