Derivative Financial Instruments - Fair Value of Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivatives, fair value disclosures
Derivative instruments, assets	$ 271.0	$ 337.1
Derivative instruments, liabilities	484.2	582.3
Fair value of embedded derivative liabilities reported with contractholder funds	153.8	356.3
Derivatives designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	69.2	52.5
Derivative instruments, liabilities	68.7	36.6
Derivatives not designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	201.8	284.6
Derivative instruments, liabilities	415.5	545.7
Interest rate contracts \| Derivatives designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	13.7	4.1
Derivative instruments, liabilities	56.2	19.0
Interest rate contracts \| Derivatives not designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	138.3	233.4
Derivative instruments, liabilities	145.1	13.0
Foreign exchange contracts \| Derivatives designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	55.5	48.4
Derivative instruments, liabilities	12.5	17.6
Foreign exchange contracts \| Derivatives not designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	33.4	11.3
Derivative instruments, liabilities	35.5	83.3
Equity contracts \| Derivatives not designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	26.1	37.3
Derivative instruments, liabilities	79.1	90.9
Credit contracts \| Derivatives not designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, assets	4.0	2.6
Derivative instruments, liabilities	2.0	2.2
Other contracts \| Derivatives not designated as hedging instruments
Derivatives, fair value disclosures
Derivative instruments, liabilities	$ 153.8	$ 356.3

This item represents the fair value of embedded derivatives that have been bifurcated from an investment host contract or universal life contract.

No definition available.

+ Details

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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 not subject to a master netting arrangement and elected not to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or 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 liabilities not subject to a master netting arrangement and elected not to be offset.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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