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Market Risk Benefits - Unobservable Inputs for Fair Value Measurement (Details) | Dec. 31, 2023 | Dec. 31, 2022
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Retirement and Income Solutions | Individual variable annuities | Minimum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0400 | 0.0397
Retirement and Income Solutions | Individual variable annuities | Minimum | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.1800 | 0.1810
Retirement and Income Solutions | Individual variable annuities | Minimum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0080 | 0.0090
Retirement and Income Solutions | Individual variable annuities | Minimum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0110 | 0.0125
Retirement and Income Solutions | Individual variable annuities | Maximum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0420 | 0.0412
Retirement and Income Solutions | Individual variable annuities | Maximum | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.3300 | 0.3415
Retirement and Income Solutions | Individual variable annuities | Maximum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0160 | 0.0196
Retirement and Income Solutions | Individual variable annuities | Maximum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.5500 | 0.2475
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 | 0.0410 | 0.0404
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 | 0.2200 | 0.2207
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0130 | 0.0165
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0590 | 0.0576
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0454 | 0.0380
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.1639 | 0.1806
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0090 | 0.0090
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0495 | 0.0495
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0470 | 0.0398
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.2375 | 0.2516
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0177 | 0.0198
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.1935 | 0.1935
Principal Asset Management | Principal International | Guaranteed pension | Asia | Weighted average input | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0461 | 0.0388
Principal Asset Management | Principal International | Guaranteed pension | Asia | Weighted average input | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.1964 | 0.2069
Principal Asset Management | Principal International | Guaranteed pension | Asia | Weighted average input | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.0151 | 0.0168
Principal Asset Management | Principal International | Guaranteed pension | Asia | Weighted average input | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.1680 | 0.1340

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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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- Definition 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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