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Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Valuation Allowance [Line Items] |  |
Deferred tax assets, valuation allowance | $ 0 | $ 0
Net operating loss carryforwards | 0 |
Deferred income tax assets: |  |
Policy benefit reserves | 1,463,227 | 1,733,672
Credit losses/Impairments | 28,519 | 15,166
Amounts due reinsurer | 0 | 8,784
Other policyholder funds | 3,789 | 4,359
Deferred compensation | 2,161 | 3,705
Share-based compensation | 2,189 | 2,775
Net operating loss carryforwards | 0 | 37,509
Other | 3,569 | 14,677
Gross deferred tax assets | 1,503,454 | 1,820,647
Deferred income tax liabilities: |  |
Deferred policy acquisition costs and deferred sales inducements | (1,146,016) | (1,303,385)
Net unrealized gains on available for sale fixed maturity securities | (639,769) | (392,189)
Derivative instruments | (119,444) | (109,287)
Policy benefit reserves | (123,270) | (147,924)
Investment income items | (28,719) | (42,105)
Amounts due reinsurer | (5,636) | 0
Other | (4,603) | (3,654)
Gross deferred tax liabilities | (2,067,457) | (1,998,544)
Net deferred income tax liability | (564,003) | $ (177,897)
Deferred Tax Asset, Valuation Allowance, Unrealized Losses on Available For Sale Fixed Maturity Securities |  |
Valuation Allowance [Line Items] |  |
Deferred tax assets, valuation allowance | $ 0 |

X
- Definition The amount as of the balance sheet date of the estimated future tax effects attributable to differences between the methods used to account for reinsurance arrangements for tax purposes and under generally accepted accounting principles which will decrease future taxable income when such differences reverse. + References No definition available. + Details
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- Definition The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis and basis of deferred policy acquisition costs and deferred sales inducements that were capitalized in conformity with generally accepted accounting principles. The difference in basis will reverse in future periods. + References No definition available. + Details
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- Definition The tax effect as of the balance sheet date of the amount of the estimated future tax deductions, before any related valuation allowance, arising from unrealized losses on available-for-sale securities which can only be deducted for tax purposes when the losses are realized, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. + References No definition available. + Details
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