Equity (Net Unrealized Investment Gains (Losses) on AFS Fixed Maturity Securities on which an allowance for credit losses has been recognized and All Other Investments) (Details) $ in Thousands	9 Months Ended
Sep. 30, 2021 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,533,059
Ending balance	284,914
Net Unrealized Investment Gains (Losses) on Available-for-Sale Fixed Maturity Securities on which an allowance for credit losses has been recognized
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	2
Net investment gains (losses) on investments arising during the period	2,017
Reclassification adjustment for (gains) losses included in net income	(1,991)
Reclassification due to allowance for credit losses recorded during the period	125
Impact of net unrealized investment (gains) losses	0
Ending balance	153
Net Unrealized Investment Gains (Losses) on All Other Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	2,369,107
Net investment gains (losses) on investments arising during the period	(742,086)
Reclassification adjustment for (gains) losses included in net income	(1,223,672)
Reclassification due to allowance for credit losses recorded during the period	(125)
Impact of net unrealized investment (gains) losses	0
Ending balance	403,224
Deferred Policy Acquisition Costs and Other Costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(363,429)
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	325,247
Ending balance	(38,182)
Future Policy Benefits and Other Liabilities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(63,159)
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	60,671
Ending balance	(2,488)
Income Tax Benefit (Expense)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(408,754)
Net investment gains (losses) on investments arising during the period	155,611
Reclassification adjustment for (gains) losses included in net income	257,295
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses	(81,145)
Ending balance	(76,993)
Accumulated Other Comprehensive Income (Loss) Related To Net Unrealized Investment Gains (Losses)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	1,533,767
Net investment gains (losses) on investments arising during the period	(584,458)
Reclassification adjustment for (gains) losses included in net income	(968,368)
Reclassification due to allowance for credit losses recorded during the period	0
Impact of net unrealized investment (gains) losses	304,773
Ending balance	$ 285,714

Impact of net unrealized investment (gains) losses

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- Definition

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

+ References

No definition available.

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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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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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- Definition

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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