XML 90 R78.htm IDEA: XBRL DOCUMENT
v3.25.3

Separate Account Balances - Separate Account Asset (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | $ 189,251.5 | $ 173,327.1
Fixed maturities |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 35,742.7 | 33,301.1
Fixed maturities | U.S. government and agencies |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 8,860.0 | 7,537.1
Fixed maturities | Non-U.S. governments |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 8,890.8 | 8,461.5
Fixed maturities | States and political subdivisions |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 165.4 | 170.1
Fixed maturities | Corporate debt securities |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 12,827.4 | 12,590.9
Fixed maturities | Residential mortgage-backed pass-through securities |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 4,244.6 | 3,746.0
Fixed maturities | Commercial mortgage-backed securities |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 305.0 | 201.4
Fixed maturities | Other debt obligations |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 449.5 | 594.1
Equity securities |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 138,191.3 | 126,575.0
Real estate |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 444.9 | 441.3
Other investments |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 8,886.4 | 8,160.2
Cash and cash equivalents |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | 4,812.1 | 4,021.7
Other assets |  |
Separate Account Assets |  |
Total separate account assets per consolidated statements of financial position | $ 1,174.1 | $ 827.8

X
- Definition Fair value amount of the specified investment category of assets maintained in separate accounts as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480109/944-80-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479808/944-20-55-15 + Details
Name: | us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480078/944-80-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 80 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480109/944-80-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479808/944-20-55-15 + Details
Name: | us-gaap_ScheduleOfFairValueOfSeparateAccountsByMajorCategoryOfInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SeparateAccountAssetCategoryAxis=us-gaap_SeparateAccountDebtSecurityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SeparateAccountAssetCategoryAxis=us-gaap_SeparateAccountEquitySecurityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SeparateAccountAssetCategoryAxis=us-gaap_SeparateAccountRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SeparateAccountAssetCategoryAxis=pfg_SeparateAccountOtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SeparateAccountAssetCategoryAxis=us-gaap_SeparateAccountCashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SeparateAccountAssetCategoryAxis=pfg_SeparateAccountOtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |