Equity (All Other Net Unrealized Investment Gains (Losses) in AOCI) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 281,442
Ending Balance	155,061
Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	289,359
Ending Balance	183,288
All Other \| Net Unrealized Gains (Losses) on Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	425,180
Net investment gains (losses) on investments arising during the period	(153,376)
Reclassification adjustment for (gains) losses included in net income	(9,118)
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	0
Ending Balance	262,686
All Other \| Deferred Policy Acquisition Costs and Other Costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	423,227
Net investment gains (losses) on investments arising during the period	0
Reclassification adjustment for (gains) losses included in net income	0
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(67,558)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	0
Ending Balance	355,669
All Other \| Future Policy Benefits and Policyholders’ Account Balances
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(482,134)
Net investment gains (losses) on investments arising during the period	0
Reclassification adjustment for (gains) losses included in net income	0
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	0
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	97,522
Ending Balance	(384,612)
All Other \| Deferred Income Tax (Liability) Benefit
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(76,914)
Net investment gains (losses) on investments arising during the period	32,208
Reclassification adjustment for (gains) losses included in net income	1,915
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	14,187
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	(20,479)
Ending Balance	(49,083)
All Other \| Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	289,359
Net investment gains (losses) on investments arising during the period	(121,168)
Reclassification adjustment for (gains) losses included in net income	(7,203)
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses on deferred policy acquisition costs and other costs	(53,371)
Impact of net unrealized investment (gains) losses on future policy benefits and policyholders' account balances	77,043
Ending Balance	$ 184,660

Non Credit Portion Of Allowance for Credit Losses Of Debt Reclassification Recognized In Other Comprehensive Income

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- Definition

Other Comprehensive Income for Unrealized Investment Gain Loss related to Policyholder's account balance Arising during the Period Net of Tax

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Other Comprehensive Income for Unrealized Investment (Gain) Loss related to deferred policy acquisition costs, deferred sales inducements and valuation of business acquired Arising during the Period Net of Tax

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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