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v3.22.2

Investments - Additional Information (Detail) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) Integer | Jun. 30, 2021 USD ($) Integer | Jun. 30, 2022 USD ($) Integer | Jun. 30, 2021 USD ($) Integer | Dec. 31, 2021 USD ($)
Schedule of Investments |  |  |  |  |
Other Long-term Investments | $ 1,391,600,000 |  | $ 1,391,600,000 |  | $ 1,203,000,000
Unfunded Commitments | 700,000 |  | 700,000 |  |
Accrued Investment Income | 705,600,000 |  | 705,600,000 |  | 602,700,000
Loan Foreclosure Expense | 0 | $ 0 | 0 | $ 0 |
Commitments to Fund Commercial Mortgage Loans | 10,000,000 |  | 10,000,000 |  |
Real Estate Held-for-sale | $ 40,000,000 |  | $ 40,000,000 |  | 40,900,000
Repurchase agreements - Typical Days outstanding |  |  | 30 |  |
Minimum percent of the fair value of securities loaned or securities purchased under repurchase agreements be maintained as collateral | 102.00% |  | 102.00% |  |
Gross Securities Loaned | $ 297,300,000 |  | $ 297,300,000 |  | 283,700,000
Gross Securities Borrowed | 112,000,000.0 |  | 112,000,000.0 |  | 94,800,000
Outstanding Repurchase Agreements | 0 |  | 0 |  | 0
Equity Securities |  |  |  |  |
Schedule of Investments |  |  |  |  |
Unrealized Gain (Loss) on Investments | (1,400,000) | 1,500,000 | 1,000,000 | 4,200,000 |
Private Equity Partnerships |  |  |  |  |
Schedule of Investments |  |  |  |  |
Unrealized Gain (Loss) on Investments | 26,900,000 | $ 32,000,000 | 43,200,000 | $ 59,000,000 |
Off Balance Sheet Amount |  |  |  |  |
Schedule of Investments |  |  |  |  |
Securities Received as Collateral | 196,300,000 |  | 196,300,000 |  | 198,600,000
Cash Collateral for Borrowed Securities | 112,000,000 |  | 112,000,000 |  | 94,800,000
Commercial Real Estate |  |  |  |  |
Schedule of Investments |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss, Mortgage Loans | 2,499,100,000 |  | 2,499,100,000 |  | 2,568,700,000
Financing Receivable, Allowance for Credit Losses, Mortgage Loans | 8,400,000 |  | 8,400,000 |  | 8,300,000
Accrued Investment Income | $ 7,800,000 |  | $ 7,800,000 |  | 8,100,000
Financing Receivable, Modifications, Number of Contracts | Integer | 0 | 0 | 0 | 0 |
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing | $ 0 |  | $ 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 0 | $ 0 | 0 | $ 0 |
Unfunded Mortgage Loan Commitments |  |  |  |  |
Schedule of Investments |  |  |  |  |
Allowance for Credit Losses, Unfunded Mortgage Loan Commitments |  |  |  |  | 100,000
Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |
Schedule of Investments |  |  |  |  |
Other Long-term Investments | 1,125,100,000 |  | 1,125,100,000 |  | 987,900,000
Tax Credit Partnership | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |
Schedule of Investments |  |  |  |  |
Other Long-term Investments | 5,100,000 |  | 5,100,000 |  | 9,300,000
Equity Method Investments | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |
Schedule of Investments |  |  |  |  |
Other Long-term Investments | 1,120,000,000 |  | 1,120,000,000 |  | $ 978,600,000
Private Placement Fixed Maturity |  |  |  |  |
Schedule of Investments |  |  |  |  |
Fair Value Disclosure, off-Balance-Sheet Risks, Amount, Liability | $ 47,000,000 |  | $ 47,000,000 |  |
External Credit Rating, Investment Grade |  |  |  |  |
Schedule of Investments |  |  |  |  |
Number of Fixed Maturity Securities in an Unrealized Loss Position | 796 |  | 796 |  |
Number of Fixed Maturity Securities in an Unrealized Loss Position Continuously for Over One Year | 50 |  | 50 |  |
External Credit Rating, Below-Investment-Grade |  |  |  |  |
Schedule of Investments |  |  |  |  |
Number of Fixed Maturity Securities in an Unrealized Loss Position | 122 |  | 122 |  |
Number of Fixed Maturity Securities in an Unrealized Loss Position Continuously for Over One Year | 6 |  | 6 |  |

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- Definition Amount of allowance for credit loss of accounts and financing receivables. Includes, but is not limited to, notes and loan receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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- Definition Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922355-210448 + Details
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- Definition The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14(d)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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