Investments - Schedule of Commercial Mortgage Loans (Details) $ in Millions	Jun. 30, 2022 USD ($) loan	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Balance \| $	$ 157.5	$ 0.0
Composition	100.00%
Loan Count \| loan	28
Apartments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Balance \| $	$ 85.2
Composition	54.10%
Loan Count \| loan	16
Hotel
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Balance \| $	$ 25.0
Composition	15.90%
Loan Count \| loan	4
Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Balance \| $	$ 25.8
Composition	16.30%
Loan Count \| loan	4
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal Balance \| $	$ 21.5
Composition	13.70%
Loan Count \| loan	4

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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+ Details