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Derivative Financial Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Total asset derivatives	$ 611	$ 575
Total liability derivatives	3,523	3,505
Call options | Derivative investments
Derivative [Line Items]
Total asset derivatives	580	548
Futures contracts | Derivative investments
Derivative [Line Items]
Total asset derivatives	0	0
Foreign currency forward | Derivative investments
Derivative [Line Items]
Total asset derivatives	1	0
Other embedded derivatives | Other long-term investments
Derivative [Line Items]
Total asset derivatives	30	27
FIA embedded derivative | Contractholder funds
Derivative [Line Items]
Total liability derivatives	3,439	3,404
Reinsurance related embedded derivatives, included in accounts payable and accrued liabilities | Accounts payable and accrued liabilities:
Derivative [Line Items]
Total liability derivatives	$ 84	$ 101

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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