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Investments (Investments Pledged as Collateral) (Details) $ in Millions | Dec. 31, 2021 USD ($)
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Available-for-sale Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Assets Held by Insurance Regulators | $ 26.3
Securities pledged as collateral for reinsurance obligations | 149.5
U.S. Government and Government Agencies [Member] |
Debt Securities, Available-for-sale [Line Items] |
Assets Held by Insurance Regulators | 22.3
Securities pledged as collateral for reinsurance obligations | 22.3
Obligations of States and Political Subdivisions [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 0.0
Assets Held by Insurance Regulators | 4.0
Securities pledged as collateral for reinsurance obligations | 4.0
Residential Mortgage Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Assets Held by Insurance Regulators | 0.0
Securities pledged as collateral for reinsurance obligations | 102.8
Commercial Mortgage Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Assets Held by Insurance Regulators | 0.0
Securities pledged as collateral for reinsurance obligations | 20.4
Federal Home Loan Bank of New York [Member] | Available-for-sale Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 54.5
Federal Home Loan Bank of New York [Member] | U.S. Government and Government Agencies [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 0.0
Federal Home Loan Bank of New York [Member] | Residential Mortgage Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 40.4
Federal Home Loan Bank of New York [Member] | Commercial Mortgage Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 14.1
Federal Home Loan Bank of Indianapolis [Member] | Available-for-sale Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 68.7
Federal Home Loan Bank of Indianapolis [Member] | U.S. Government and Government Agencies [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 0.0
Federal Home Loan Bank of Indianapolis [Member] | Obligations of States and Political Subdivisions [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 0.0
Federal Home Loan Bank of Indianapolis [Member] | Residential Mortgage Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 62.4
Federal Home Loan Bank of Indianapolis [Member] | Commercial Mortgage Backed Securities [Member] |
Debt Securities, Available-for-sale [Line Items] |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | $ 6.3

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