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v3.23.1

Nature of Operations and Significant Accounting Policies - Balances and changes in MRBs (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Balances and changes in MRBs |  |  |
Balance at beginning of period | $ (98.2) |  |
Balance at end of period | (87.1) | $ (98.2) |
Individual variable annuities | Retirement and Income Solutions |  |  |
Balances and changes in MRBs |  |  |
Balance at beginning of period | (72.2) | (494.7) | $ (591.3)
Effect of changes in nonperformance risk | 31.7 | (109.5) | (106.7)
Adjusted balance at beginning of period | (103.9) | (385.2) | (484.6)
Interest accrual and expected policyholder behavior | (19.8) | (90.1) | (120.7)
Benefit payments | 0.2 | 1.3 | 0.4
Changes in interest rates | (54.2) | 539.1 | 154.3
Changes in equity markets | 46.4 | (112.4) | 106.4
Changes in equity index volatility | 30.6 | (50.2) | 15.1
Actual policyholder behavior different from expected behavior | (2.0) | 1.5 | 2.3
Changes in future expected policyholder behavior | 0.0 | (6.1) | (96.6)
Changes in other future expected assumptions | 0.0 | (1.8) | 38.2
Adjusted balance at end of period | (102.7) | (103.9) | (385.2)
Effect of changes in nonperformance risk at end of period | 39.6 | 31.7 | (109.5)
Balance at end of period | (63.1) | (72.2) | (494.7)
Guaranteed pension | Principal Asset Management | Principal International | Asia |  |  |
Balances and changes in MRBs |  |  |
Balance at beginning of period | (26.0) | (35.1) | (53.3)
Effect of changes in nonperformance risk | (1.2) | (4.3) | 6.5
Adjusted balance at beginning of period | (24.8) | (30.8) | (46.8)
Interest accrual and expected policyholder behavior | (2.8) | (7.1) | (5.3)
Benefit payments | 3.7 | 9.5 | 5.7
Changes in interest rates | 0.7 | 3.9 | 7.6
Changes in equity markets | 0.1 | (1.0) | 1.4
Actual policyholder behavior different from expected behavior | 0.4 | 0.7 | 3.6
Changes in future expected policyholder behavior |  |  | 0.5
Changes in other future expected assumptions |  |  | 2.3
Foreign currency translation adjustment |  |  | 0.2
Adjusted balance at end of period | (22.6) | (24.8) | (30.8)
Effect of changes in nonperformance risk at end of period | (1.4) | (1.2) | (4.3)
Balance at end of period | $ (24.0) | $ (26.0) | $ (35.1)

X
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- Definition Amount, before tax, of accumulated other comprehensive income (loss) (AOCI) from (increase) decrease in instrument-specific credit risk on contract or contract feature in long-duration contract issued by insurance entity protecting contract holder from other-than-nominal capital market risk and exposing insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 29G -URI https://asc.fasb.org/extlink&oid=126561865&loc=SL117819547-158441 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 7B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124506351&loc=SL117782768-158439 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 13K -Subparagraph (k) -URI https://asc.fasb.org/extlink&oid=126561865&loc=SL117783743-158441 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641 + Details
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- Definition Amount, before effect of reinsurance and after accumulated increase (decrease) in instrument-specific credit risk, of 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 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 29G -URI https://asc.fasb.org/extlink&oid=126561865&loc=SL117819547-158441 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 7B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124506351&loc=SL117782768-158439 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124509262&loc=SL117780254-158436 + Details
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- Definition Amount, before effect of reinsurance and cumulative increase (decrease) in instrument-specific credit risk, of 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/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 29G -URI https://asc.fasb.org/extlink&oid=126561865&loc=SL117819547-158441 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 7B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124506351&loc=SL117782768-158439 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641 + Details
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