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Market Risk Benefits - Asset and Liability Position and Reconciliation (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Market Risk Benefits
Market risk benefit asset	$ 148.6	$ 109.2
Market risk benefit liability	136.1	207.4
Net asset (liability)	12.5	(98.2)
Retirement and Income Solutions | Individual variable annuities
Market Risk Benefits
Market risk benefit asset	148.6	109.2
Market risk benefit liability	112.5	181.4
Net asset (liability)	36.1	(72.2)	$ (494.7)	$ (591.3)
Principal Asset Management | Principal International | Guaranteed pension | Asia
Market Risk Benefits
Market risk benefit liability	23.6	26.0
Net asset (liability)	$ (23.6)	$ (26.0)	$ (35.1)	$ (53.3)

X

- Definition

Amount, before effect of reinsurance and after accumulated increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of asset position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of liability position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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