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Closed Block (Closed Block Revenues and Benefits and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Premiums	$ 431	$ 480
Net investment income	590	548
Realized investment gains (losses), net	72	256
Other income (loss)	276	(603)
Total Closed Block revenues	1,369	681
Benefits and Expenses
Policyholders’ benefits	634	647
Interest credited to policyholders’ account balances	31	32
Dividends to policyholders	581	(94)
General and administrative expenses	79	85
Total Closed Block benefits and expenses	1,325	670
Closed Block revenues, net of Closed Block benefits and expenses, before income taxes	44	11
Income tax expense (benefit)	29	(6)
Closed Block revenues, net of Closed Block benefits and expenses and income taxes	$ 15	$ 17

X

- Definition

Amount of benefits, claims and expenses that are related to an insurance entity's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block). Includes, but is not limited to, death benefits, matured endowments, participating dividends, general expenses and deferred acquisition costs related to the closed block.

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-SubTopic 805
-Section 50
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Difference between prior period and current period estimated policy claims and interest due to and designated to policies in an insurance entity's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block).

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- Definition

The amount of income tax expense or benefit allocated to the operations of the closed block for the period.

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Income for the period from the investments allocated to an insurance entity's segregated group of participating or dividend-paying policies and contracts (known as a closed block), net of investment expenses, which are typically reported in a table of closed block operations.

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Amount of net income (loss) from operations of the closed block.

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Amount of expense classified as other allocated to the closed block.

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Amount of revenue classified as other allocated to the closed block.

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An expense for the period for estimated policy claims in an insurance entity's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block), as typically reported in a table of closed block operations as part of summarized financial data.

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An expense for the period representing distributions paid or accrued for the segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block), which may be presented in a table of closed block operations as part of summarized financial data.

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For the segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block), revenue for the period from insurance policy premiums; typically included in a table of closed block operations.

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Gains and losses realized for the period from the investments allocated to an insurance entity's segregated group of participating or dividend-paying policies and contracts (known as a closed block).

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The revenues less expenses from operations of the closed block during the period, before income taxes allocated thereto.

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Total revenues from an insurance company's segregated group of participating or dividend-paying policies and contracts along with the assets allocated to them (known as a closed block).

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