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Separate Account Balances - Principal Asset Management - Principal International (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Changes in separate account liabilities |  |
Balance at beginning of period | $ 155,375.1 |
Balance at end of period | 167,605.6 | $ 155,375.1
Principal Asset Management | Principal International |  |
Changes in separate account liabilities |  |
Balance at beginning of period | 34,231.7 |
Balance at end of period | 34,724.8 | 34,231.7
Principal Asset Management | Principal International | Pension | Latin America |  |
Changes in separate account liabilities |  |
Balance at beginning of period | 33,316.7 | 33,030.6
Premiums and deposits | 3,628.6 | 3,620.4
Policy charges | (17.8) | (18.2)
Surrenders, withdrawals and benefit payments | (4,191.7) | (3,984.6)
Investment performance | 2,733.7 | 498.8
Other | 7.6 | (0.8)
Foreign currency translation adjustment | (896.5) | 170.5
Balance at end of period | 34,580.6 | 33,316.7
Cash surrender value | 34,580.6 | 33,316.7
Principal Asset Management | Principal International | Guaranteed pension | Asia |  |
Changes in separate account liabilities |  |
Balance at beginning of period | 915.0 | 971.3
Premiums and deposits | 217.2 | 276.2
Policy charges | (16.9) | (19.8)
Surrenders, withdrawals and benefit payments | (1,006.8) | (247.0)
Investment performance | 37.7 | (64.0)
Other | (0.3) | (0.4)
Foreign currency translation adjustment | (1.7) | (1.3)
Balance at end of period | 144.2 | 915.0
Cash surrender value | $ 144.2 | $ 915.0

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