XML 122 R111.htm IDEA: XBRL DOCUMENT
v3.23.1

Market Risk Benefits - Unobservable Inputs for Fair Value Measurement (Details) | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Retirement and Income Solutions | Individual variable annuities | Minimum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 3.67 | 3.97
Retirement and Income Solutions | Individual variable annuities | Minimum | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 18.10 | 18.10
Retirement and Income Solutions | Individual variable annuities | Minimum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.93 | 0.90
Retirement and Income Solutions | Individual variable annuities | Minimum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 1.25 | 1.25
Retirement and Income Solutions | Individual variable annuities | Maximum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 3.80 | 4.12
Retirement and Income Solutions | Individual variable annuities | Maximum | Long-term equity market volatility |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 31.76 | 34.15
Retirement and Income Solutions | Individual variable annuities | Maximum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 2.00 | 1.96
Retirement and Income Solutions | Individual variable annuities | Maximum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 24.75 | 24.75
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 | 3.73 | 4.04
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 | 21.37 | 22.07
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 1.71 | 1.65
Retirement and Income Solutions | Individual variable annuities | Weighted average input | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 5.76 | 5.76
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 3.93 | 3.80
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 | 18.07 | 18.06
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 0.66 | 0.90
Principal Asset Management | Principal International | Guaranteed pension | Asia | Minimum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 4.95 | 4.95
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Long-term interest rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 4.08 | 3.98
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 | 24.09 | 25.16
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 1.63 | 1.98
Principal Asset Management | Principal International | Guaranteed pension | Asia | Maximum | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 19.35 | 19.35
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 | 4.00 | 3.88
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 | 19.98 | 20.69
Principal Asset Management | Principal International | Guaranteed pension | Asia | Weighted average input | Nonperformance risk |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 1.35 | 1.68
Principal Asset Management | Principal International | Guaranteed pension | Asia | Weighted average input | Lapse rate |  |
Unobservable Inputs for Fair Value Measurement |  |
Market risk benefits, measurement input | 13.40 | 13.40

X
- 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
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_MarketRiskBenefitMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pfg_SegmentRetirementAndIncomeSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_VariableAnnuityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=pfg_MeasurementInputLongDurationInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=pfg_MeasurementInputNonPerformanceRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLapseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pfg_SegmentPrincipalAssetManagementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsegmentsAxis=pfg_SubsegmentPrincipalInternationalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=pfg_GuaranteedPensionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=srt_AsiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |