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Market Risk Benefits - Unobservable Inputs for Fair Value Measurement (Details)	Dec. 31, 2024	Dec. 31, 2023
Retirement and Income Solutions | Individual variable annuities | Minimum | Long-term interest rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.0478	0.04
Retirement and Income Solutions | Individual variable annuities | Minimum | Long-term equity market volatility
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.181	0.18
Retirement and Income Solutions | Individual variable annuities | Minimum | Nonperformance risk
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.004	0.008
Retirement and Income Solutions | Individual variable annuities | Minimum | Lapse rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.009	0.011
Retirement and Income Solutions | Individual variable annuities | Maximum | Long-term interest rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.0485	0.042
Retirement and Income Solutions | Individual variable annuities | Maximum | Long-term equity market volatility
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.3553	0.33
Retirement and Income Solutions | Individual variable annuities | Maximum | Nonperformance risk
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.011	0.016
Retirement and Income Solutions | Individual variable annuities | Maximum | Lapse rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.55	0.55
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Long-term interest rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.0481	0.041
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Long-term equity market volatility
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.2176	0.22
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Nonperformance risk
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.0089	0.013
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Lapse rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input	0.0579	0.059
Principal Asset Management | International Pension | Guaranteed pension | Asia | Minimum | Long-term interest rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.0454
Principal Asset Management | International Pension | Guaranteed pension | Asia | Minimum | Long-term equity market volatility
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.1639
Principal Asset Management | International Pension | Guaranteed pension | Asia | Minimum | Nonperformance risk
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.009
Principal Asset Management | International Pension | Guaranteed pension | Asia | Minimum | Lapse rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.0495
Principal Asset Management | International Pension | Guaranteed pension | Asia | Maximum | Long-term interest rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.047
Principal Asset Management | International Pension | Guaranteed pension | Asia | Maximum | Long-term equity market volatility
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.2375
Principal Asset Management | International Pension | Guaranteed pension | Asia | Maximum | Nonperformance risk
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.0177
Principal Asset Management | International Pension | Guaranteed pension | Asia | Maximum | Lapse rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.1935
Principal Asset Management | International Pension | Guaranteed pension | Asia | Weighted average input | Long-term interest rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.0461
Principal Asset Management | International Pension | Guaranteed pension | Asia | Weighted average input | Long-term equity market volatility
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.1964
Principal Asset Management | International Pension | Guaranteed pension | Asia | Weighted average input | Nonperformance risk
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.0151
Principal Asset Management | International Pension | Guaranteed pension | Asia | Weighted average input | Lapse rate
Unobservable Inputs for Fair Value Measurement
Market risk benefits, measurement input		0.168

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Value of measurement input used to measure 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.

+ References

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