Summary of Significant Accounting Policies Summary of Significant of Policies	6 Months Ended
Jun. 30, 2020
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	The Company adopted accounting standard, Financial Instruments - Credit Losses - Measurement of Credit Losses on Financial Instruments, on January 1, 2020. The significant accounting policies for Available-for-Sale Securities, Financing Receivables, and Reinsurance were updated as a result of adopting the new accounting standard. Refer to Note 3 for further details of the adoption. Available-for-Sale Securities Available-for-Sale securities are carried at fair value with unrealized gains (losses) recorded in accumulated other comprehensive income (“AOCI”), net of impacts to deferred acquisition costs (“DAC”), deferred sales inducement costs (“DSIC”), unearned revenue, benefit reserves, reinsurance recoverables and income taxes. Gains and losses are recognized on a trade date basis in the Consolidated Statements of Income upon disposition of the securities. Available-for-Sale securities are impaired when the fair value of an investment is less than its amortized cost. When an Available-for-Sale security is impaired, the Company first assesses whether or not: (i) it has the intent to sell the security (made a decision to sell) or (ii) it is more likely than not that the Company will be required to sell the security before its anticipated recovery. If either of these conditions exist, the Company recognizes an impairment by reducing the book value of the security for the difference between the investment’s amortized cost and its fair value with a corresponding charge to earnings. Subsequent increases in the fair value of Available-for-Sale securities that occur in periods after a write-down has occurred are recorded as unrealized gains in other comprehensive income (“OCI”), while subsequent decreases in fair value would continue to be recorded as reductions of book value with a charge to earnings. For securities that do not meet the above criteria, the Company determines whether the decrease in fair value is due to a credit loss or due to other factors. The amount of impairment due to credit-related factors, if any, is recognized as an allowance for credit losses with a related charge to net realized investment gains (losses). The allowance for credit losses is limited to the amount by which the security’s amortized cost basis exceeds its fair value. The amount of the impairment related to other factors is recognized in OCI. Factors the Company considers in determining whether declines in the fair value of fixed maturity securities are due to credit-related factors include: (i) the extent to which the market value is below amortized cost; (ii) fundamental analysis of the liquidity, business prospects and overall financial condition of the issuer; and (iii) market events that could impact credit ratings, economic and business climate, litigation and government actions, and similar external business factors. If through subsequent evaluation there is a sustained increase in cash flows expected, both the allowance and related charge to earnings may be reversed to reflect the increase in expected principal and interest payments. However, for Available-for-Sale securities that recognized an impairment prior to January 1, 2020 by reducing the book value of the security, the difference between the new amortized cost basis and the improved cash flows expected to be collected is accreted as interest income. In order to determine the amount of the credit loss component for corporate debt securities, a best estimate of the present value of cash flows expected to be collected discounted at the security’s effective interest rate is compared to the amortized cost basis of the security. The significant inputs to cash flow projections consider potential debt restructuring terms, projected cash flows available to pay creditors and the Company’s position in the debtor’s overall capital structure. When assessing potential credit-related impairments for structured investments (e.g., residential mortgage backed securities, commercial mortgage backed securities and asset backed securities), the Company also considers credit-related factors such as overall deal structure and its position within the structure, quality of underlying collateral, delinquencies and defaults, loss severities, recoveries, prepayments and cumulative loss projections. Management has elected to exclude accrued interest in its measurement of the allowance for credit losses for Available-for-Sale securities. Accrued interest on Available-for-sale securities is recorded as earned in accrued investment income on the Consolidated Balance Sheets. Available-for-Sale securities are placed on nonaccrual status when the accrued balance becomes 90 days past due or earlier based on management’s evaluation of the facts and circumstances of each security under review. At this time all previously accrued interest is reversed through net investment income. Financing Receivables Financing receivables are comprised of commercial loans, policy loans, and deposit receivables. Commercial Loans Commercial loans include commercial mortgage loans and syndicated loans and are recorded at amortized cost less the allowance for loan losses. Commercial mortgage loans are recorded within mortgage loans and syndicated loans are recorded within other investments on the Consolidated Balance Sheets. Commercial mortgage loans are loans on commercial properties that are originated by the Company. Syndicated loans represent the Company’s investment in loan syndications originated by unrelated third parties. Interest income is accrued as earned on the unpaid principal balances of the loans. Interest income recognized on commercial mortgage loans and syndicated loans is recorded in net investment income on the Consolidated Statements of Income. Policy Loans Policy loans do not exceed the cash surrender value at origination. As there is minimal risk of loss related to policy loans, the Company does not record an allowance for credit losses. Interest income is accrued as earned on the unpaid principal balances of the loans. Interest income recognized on policy loans is recorded in accrued investment income on the Consolidated Statements of Income. Deposit Receivable For each of its reinsurance agreements, the Company determines whether the agreement provides indemnification against loss or liability related to insurance risk in accordance with applicable accounting standards. If the Company determines that a reinsurance agreement does not expose the reinsurer to a reasonable possibility of a significant loss from insurance risk, the Company records the agreement using the deposit method of accounting. Reinsurance deposits made are included in receivables. As amounts are received, consistent with the underlying contracts, the deposit receivable is adjusted. The deposit receivable is accreted using the interest method and the accretion is reported in other revenues. See Note 7 for additional information on financing receivables. Allowance for Credit Losses The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected over the asset’s expected life, considering past events, current conditions and reasonable and supportable forecasts of future economic conditions. Prior to January 1, 2020, the allowance for credit losses was based on an incurred loss model that did not require estimating expected credit losses over the expected life of the asset. Estimates of expected credit losses consider both historical charge-off and recovery experience as well as management’s expectation of future charge-off and recovery levels. Expected losses related to risks other than credit risk are excluded from the allowance for credit losses. The allowance for credit losses is measured and recorded upon initial recognition of the loan, regardless of whether it is originated or purchased. The methods and information used to develop the allowance for credit losses for each class of financing receivable are discussed below. Commercial Loans The allowance for credit losses for commercial mortgage loans and syndicated loans utilizes a probability of default and loss severity approach to estimate lifetime expected credit losses. Actual historical default and loss severity data for each type of commercial loan is adjusted for current conditions and reasonable and supportable forecasts of future economic conditions to develop the probability of default and loss severity assumptions that are applied to the amortized cost basis of the loans over the expected life of each portfolio. The allowance for credit losses on commercial mortgage loans and syndicated loans is recorded through provisions charged to net realized investment gains (losses) and is reduced/increased by net charge-offs/recoveries. Management determines the adequacy of the allowance for credit losses based on the overall loan portfolio composition, recent and historical loss experience, and other pertinent factors, including when applicable, internal risk ratings, loan-to-value (“LTV”) ratios and occupancy rates, along with reasonable and supportable forecasts of economic and market conditions. This evaluation is inherently subjective as it requires estimates, which may be susceptible to significant change. While the Company may attribute portions of the allowance to specific loan pools as part of the allowance estimation process, the entire allowance is available to absorb losses expected over the life of the loan portfolio. Deposit receivable The allowance for credit losses is calculated on an individual reinsurer basis. The deposit receivable is collateralized by an underlying trust arrangement. Management evaluates the terms of the reinsurance and trust agreements, the nature of the underlying assets, and the potential for changes in the collateral value when considering the need for an allowance for credit losses. Nonaccrual Loans Commercial mortgage loans and syndicated loans are placed on nonaccrual status when either the collection of interest or principal has become 90 days past due or is otherwise considered doubtful of collection. When a loan is placed on nonaccrual status, unpaid accrued interest is reversed. Interest payments received on loans on nonaccrual status are generally applied to principal unless the remaining principal balance has been determined to be fully collectible. Management has elected to exclude accrued interest in its measurement of the allowance for credit losses for commercial mortgage loans and syndicated loans. Restructured Loans A loan is classified as a restructured loan when the Company makes certain concessionary modifications to contractual terms for borrowers experiencing financial difficulties. When the interest rate, minimum payments, and/or due dates have been modified in an attempt to make the loan more affordable to a borrower experiencing financial difficulties, the modification is considered a troubled debt restructuring. Modifications to loan terms do not automatically result in troubled debt restructurings (“TDRs”). Per the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus, modifications made on a good faith basis in response to the coronavirus disease 2019 (“COVID-19”) pandemic to borrowers who were not more than 30 days past due as of December 31, 2019, such as payment deferrals, extensions of repayment terms, fee waivers, or delays in payment that are not significant to the unpaid principal value of the loan, are not considered TDRs. Generally, performance prior to the restructuring or significant events that coincide with the restructuring are considered in assessing whether the borrower can meet the new terms which may result in the loan being returned to accrual status at the time of the restructuring or after a performance period. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on nonaccrual status. Charge-off and Foreclosure Charge-offs are recorded when the Company concludes that all or a portion of the commercial mortgage loan or syndicated loan is uncollectible. Factors used by the Company to determine whether all amounts due on commercial mortgage loans will be collected, include but are not limited to, the financial condition of the borrower, performance of the underlying properties, collateral and/or guarantees on the loan, and the borrower’s estimated future ability to pay based on property type and geographic location. Factors used by the Company to determine whether all amounts due on syndicated loans will be collected, include but are not limited to the borrower’s financial condition, industry outlook, and internal risk ratings based on rating agency data and internal analyst expectations. If it is determined that foreclosure on a commercial mortgage loan is probable and the fair value is less than the current loan balance, expected credit losses are measured as the difference between the amortized cost basis of the asset and fair value less estimated selling costs. Upon foreclosure, the commercial mortgage loan and related allowance are reversed, and the foreclosed property is recorded as real estate owned in other assets. Reinsurance Policyholder account balances, future policy benefits and claims recoverable under reinsurance contracts are recorded within receivables, net of the allowance for credit losses. The Company evaluates the financial condition of its reinsurers prior to entering into new reinsurance contracts and on a periodic basis during the contract term. The allowance for credit losses related to reinsurance recoverable is based on applying observable industry data including insurer ratings, default and loss severity data to the Company’s reinsurance recoverable balances. Management evaluates the results of the calculation and considers differences between the industry data and the Company’s data. Such differences include the fact that the Company has no actual history of losses and the fact that industry data may contain non-life insurers. This evaluation is inherently subjective as it requires estimates, which may be susceptible to significant change given the long-term nature of these receivables. In addition, the Company has a reinsurance protection agreement that provides credit protections for its reinsured long term care business. The allowance for credit losses on reinsurance recoverable is recorded through provisions charged` to benefits, claims, losses and settlement expenses on the Consolidated Statements of Income.

The Company adopted accounting standard, Financial Instruments - Credit Losses - Measurement of Credit Losses on Financial Instruments, on January 1, 2020. The significant accounting policies for Available-for-Sale Securities, Financing Receivables, and Reinsurance were updated as a result of adopting the new accounting standard. Refer to Note 3 for further details of the adoption.

Available-for-Sale securities are carried at fair value with unrealized gains (losses) recorded in accumulated other comprehensive income (“AOCI”), net of impacts to deferred acquisition costs (“DAC”), deferred sales inducement costs (“DSIC”), unearned revenue, benefit reserves, reinsurance recoverables and income taxes. Gains and losses are recognized on a trade date basis in the Consolidated Statements of Income upon disposition of the securities.

Available-for-Sale securities are impaired when the fair value of an investment is less than its amortized cost. When an Available-for-Sale security is impaired, the Company first assesses whether or not: (i) it has the intent to sell the security (made a decision to sell) or (ii) it is more likely than not that the Company will be required to sell the security before its anticipated recovery. If either of these conditions exist, the Company recognizes an impairment by reducing the book value of the security for the difference between the investment’s amortized cost and its fair value with a corresponding charge to earnings. Subsequent increases in the fair value of Available-for-Sale securities that occur in periods after a write-down has occurred are recorded as unrealized gains in other comprehensive income (“OCI”), while subsequent decreases in fair value would continue to be recorded as reductions of book value with a charge to earnings.

For securities that do not meet the above criteria, the Company determines whether the decrease in fair value is due to a credit loss or due to other factors. The amount of impairment due to credit-related factors, if any, is recognized as an allowance for credit losses with a related charge to net realized investment gains (losses). The allowance for credit losses is limited to the amount by which the security’s amortized cost basis exceeds its fair value. The amount of the impairment related to other factors is recognized in OCI. Factors the Company considers in determining whether declines in the fair value of fixed maturity securities are due to credit-related factors include: (i) the extent to which the market value is below amortized cost; (ii) fundamental analysis of the liquidity, business prospects and overall financial condition of the issuer; and (iii) market events that could impact credit ratings, economic and business climate, litigation and government actions, and similar external business factors.

In order to determine the amount of the credit loss component for corporate debt securities, a best estimate of the present value of cash flows expected to be collected discounted at the security’s effective interest rate is compared to the amortized cost basis of the security. The significant inputs to cash flow projections consider potential debt restructuring terms, projected cash flows available to pay creditors and the Company’s position in the debtor’s overall capital structure. When assessing potential credit-related impairments for structured investments (e.g., residential mortgage backed securities, commercial mortgage backed securities and asset backed securities), the Company also considers credit-related factors such as overall deal structure and its position within the structure, quality of underlying collateral, delinquencies and defaults, loss severities, recoveries, prepayments and cumulative loss projections.

Management has elected to exclude accrued interest in its measurement of the allowance for credit losses for Available-for-Sale securities. Accrued interest on Available-for-sale securities is recorded as earned in accrued investment income on the Consolidated Balance Sheets. Available-for-Sale securities are placed on nonaccrual status when the accrued balance becomes 90 days past due or earlier based on management’s evaluation of the facts and circumstances of each security under review. At this time all previously accrued interest is reversed through net investment income.

Commercial loans include commercial mortgage loans and syndicated loans and are recorded at amortized cost less the allowance for loan losses. Commercial mortgage loans are recorded within mortgage loans and syndicated loans are recorded within other investments on the Consolidated Balance Sheets. Commercial mortgage loans are loans on commercial properties that are originated by the Company. Syndicated loans represent the Company’s investment in loan syndications originated by unrelated third parties.

For each of its reinsurance agreements, the Company determines whether the agreement provides indemnification against loss or liability related to insurance risk in accordance with applicable accounting standards. If the Company determines that a reinsurance agreement does not expose the reinsurer to a reasonable possibility of a significant loss from insurance risk, the Company records the agreement using the deposit method of accounting. Reinsurance deposits made are included in receivables. As amounts are received, consistent with the underlying contracts, the deposit receivable is adjusted. The deposit receivable is accreted using the interest method and the accretion is reported in other revenues.

The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected over the asset’s expected life, considering past events, current conditions and reasonable and supportable forecasts of future economic conditions. Prior to January 1, 2020, the allowance for credit losses was based on an incurred loss model that did not require estimating expected credit losses over the expected life of the asset. Estimates of expected credit losses consider both historical charge-off and recovery experience as well as management’s expectation of future charge-off and recovery levels. Expected losses related to risks other than credit risk are excluded from the allowance for credit losses. The allowance for credit losses is measured and recorded upon initial recognition of the loan, regardless of whether it is originated or purchased. The methods and information used to develop the allowance for credit losses for each class of financing receivable are discussed below.

The allowance for credit losses for commercial mortgage loans and syndicated loans utilizes a probability of default and loss severity approach to estimate lifetime expected credit losses. Actual historical default and loss severity data for each type of commercial loan is adjusted for current conditions and reasonable and supportable forecasts of future economic conditions to develop the probability of default and loss severity assumptions that are applied to the amortized cost basis of the loans over the expected life of each portfolio. The allowance for credit losses on commercial mortgage loans and syndicated loans is recorded through provisions charged to net realized investment gains (losses) and is reduced/increased by net charge-offs/recoveries.

Management determines the adequacy of the allowance for credit losses based on the overall loan portfolio composition, recent and historical loss experience, and other pertinent factors, including when applicable, internal risk ratings, loan-to-value (“LTV”) ratios and occupancy rates, along with reasonable and supportable forecasts of economic and market conditions. This evaluation is inherently subjective as it requires estimates, which may be susceptible to significant change. While the Company may attribute portions of the allowance to specific loan pools as part of the allowance estimation process, the entire allowance is available to absorb losses expected over the life of the loan portfolio.

The allowance for credit losses is calculated on an individual reinsurer basis. The deposit receivable is collateralized by an underlying trust arrangement. Management evaluates the terms of the reinsurance and trust agreements, the nature of the underlying assets, and the potential for changes in the collateral value when considering the need for an allowance for credit losses.

Commercial mortgage loans and syndicated loans are placed on nonaccrual status when either the collection of interest or principal has become 90 days past due or is otherwise considered doubtful of collection. When a loan is placed on nonaccrual status, unpaid accrued interest is reversed. Interest payments received on loans on nonaccrual status are generally applied to principal unless the remaining principal balance has been determined to be fully collectible. Management has elected to exclude accrued interest in its measurement of the allowance for credit losses for commercial mortgage loans and syndicated loans.

A loan is classified as a restructured loan when the Company makes certain concessionary modifications to contractual terms for borrowers experiencing financial difficulties. When the interest rate, minimum payments, and/or due dates have been modified in an attempt to make the loan more affordable to a borrower experiencing financial difficulties, the modification is considered a troubled debt restructuring. Modifications to loan terms do not automatically result in troubled debt restructurings (“TDRs”). Per the Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus, modifications made on a good faith basis in response to the coronavirus disease 2019 (“COVID-19”) pandemic to borrowers who were not more than 30 days past due as of December 31, 2019, such as payment deferrals, extensions of repayment terms, fee waivers, or delays in payment that are not significant to the unpaid principal value of the loan, are not considered TDRs. Generally, performance prior to the restructuring or significant events that coincide with the restructuring are considered in assessing whether the borrower can meet the new terms which may result in the loan being returned to accrual status at the time of the restructuring or after a performance period. If the borrower’s ability to meet the revised payment schedule is not reasonably assured, the loan remains on nonaccrual status.

Charge-offs are recorded when the Company concludes that all or a portion of the commercial mortgage loan or syndicated loan is uncollectible. Factors used by the Company to determine whether all amounts due on commercial mortgage loans will be collected, include but are not limited to, the financial condition of the borrower, performance of the underlying properties, collateral and/or guarantees on the loan, and the borrower’s estimated future ability to pay based on property type and geographic location. Factors used by the Company to determine whether all amounts due on syndicated loans will be collected, include but are not limited to the borrower’s financial condition, industry outlook, and internal risk ratings based on rating agency data and internal analyst expectations.

If it is determined that foreclosure on a commercial mortgage loan is probable and the fair value is less than the current loan balance, expected credit losses are measured as the difference between the amortized cost basis of the asset and fair value less estimated selling costs. Upon foreclosure, the commercial mortgage loan and related allowance are reversed, and the foreclosed property is recorded as real estate owned in other assets.

Policyholder account balances, future policy benefits and claims recoverable under reinsurance contracts are recorded within receivables, net of the allowance for credit losses. The Company evaluates the financial condition of its reinsurers prior to entering into new reinsurance contracts and on a periodic basis during the contract term. The allowance for credit losses related to reinsurance recoverable is based on applying observable industry data including insurer ratings, default and loss severity data to the Company’s reinsurance recoverable balances. Management evaluates the results of the calculation and considers differences between the industry data and the Company’s data. Such differences include the fact that the Company has no actual history of losses and the fact that industry data may contain non-life insurers. This evaluation is inherently subjective as it requires estimates, which may be susceptible to significant change given the long-term nature of these receivables. In addition, the Company has a reinsurance protection agreement that provides credit protections for its reinsured long term care business. The allowance for credit losses on reinsurance recoverable is recorded through provisions charged` to benefits, claims, losses and settlement expenses on the Consolidated Statements of Income.