XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.21.1

Variable Interest Entities - Unconsolidated VIEs (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | $ 295,634.6 | $ 296,627.7
Carrying value used if distributions received are in excess of investment | 0.0 | 0.0
Money Market Funds |  |
Total assets of unconsolidated money market mutual funds | 5,200.0 | 4,400.0
Corporate debt securities | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 287.4 | 285.7
Corporate debt securities | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 296.3 | 296.9
Residential mortgage-backed pass-through securities | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 2,724.4 | 2,857.6
Residential mortgage-backed pass-through securities | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 2,797.8 | 2,986.8
Residential mortgage-backed pass-through securities | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 170.4 | 190.5
Residential mortgage-backed pass-through securities | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 170.4 | 190.5
Commercial mortgage-backed securities | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 4,826.8 | 4,741.2
Commercial mortgage-backed securities | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 4,940.9 | 4,942.3
Commercial mortgage-backed securities | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 26.4 | 27.1
Commercial mortgage-backed securities | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 26.4 | 27.1
Collateralized debt obligations | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 4,156.4 | 4,045.9
Collateralized debt obligations | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 4,150.3 | 4,027.5
Collateralized debt obligations | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 20.1 | 20.6
Collateralized debt obligations | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 20.1 | 20.6
Other debt obligations | Available-for-sale |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 6,634.1 | 6,832.6
Other debt obligations | Available-for-sale | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 6,785.0 | 7,045.9
Other debt obligations | Trading |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 8.7 | 9.4
Other debt obligations | Trading | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 8.7 | 9.4
Equity securities |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 119.1 | 121.7
Equity securities | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | 119.1 | 121.7
Other investments: Other limited partnership and fund interests |  |
Unconsolidated Variable Interest Entity disclosures |  |
Maximum exposure to loss | 1,813.7 | 1,739.0
Fully secured debt of international real estate funds with recourse to the investment manager, included in maximum loss exposure | 135.5 | 141.2
Other investments: Other limited partnership and fund interests | Variable Interest Entity |  |
Unconsolidated Variable Interest Entity disclosures |  |
Asset carrying value | $ 1,033.1 | $ 999.1

X
- Definition The carrying value used in the methodology for estimating the maximum exposure to loss of the reporting entity as a result of its involvement with the Variable Interest Entity (VIE), if distributions have been received in excess of our investment, resulting in a negative carrying value for the investment. + References No definition available. + Details
Name: | pfg_AssetCarryingValueUsedIfDistributionsReceivedInExcessOfInvestment
Namespace Prefix: | pfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | pfg_MoneyMarketFundsAbstract
Namespace Prefix: | pfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total assets held by money market mutual funds that are not consolidated by the entity as the money market funds are registered under Rule 2a-7 of the Investment Company Act of 1940 or are similar unregistered funds. + References No definition available. + Details
Name: | pfg_TotalAssetsUnconsolidatedMoneyMarketMutualFund
Namespace Prefix: | pfg_
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 No definition available. + Details
Name: | pfg_UnconsolidatedVariableInterestEntityLineItems
Namespace Prefix: | pfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of debt of managed international rest estate funds that is fully secured by assets whose value exceeds the amount of the debt, but also includes recourse to the investment manager, included in the reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References No definition available. + Details
Name: | pfg_VariableInterestEntityFullySecuredDebtOfInternationalRealEstateFundsIncludedInMaximumLossExposureAmount
Namespace Prefix: | pfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5747-111685 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=121559654&loc=d3e5728-111685 + Details
Name: | us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_InvestmentSecondaryCategorizationAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
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_InvestmentSecondaryCategorizationAxis=pfg_TradingSecuritiesMember
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_CollateralizedDebtObligationsMember
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_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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