XML 46 R35.htm IDEA: XBRL DOCUMENT
v3.23.2

Contractholder Funds (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Policyholder account balances |
Schedule of disaggregated policyholder account balance amounts and reconcile the totals to contractholder funds (Table) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2023 | ​ | December 31, 2022
​ | ​ | (in millions)
Retirement and Income Solutions: |  | ​ |  |  | ​ |
Workplace savings and retirement solutions | ​ | $ | 12,441.6 | ​ | $ | 12,154.7
Individual variable annuities | ​ |  | 375.4 | ​ |  | 381.4
Individual fixed deferred annuities | ​ |  | 6,358.0 | ​ |  | 7,228.3
Total Retirement and Income Solutions | ​ |  | 19,175.0 | ​ |  | 19,764.4
Benefits and Protection - Life Insurance: | ​ |  | ​ | ​ |  |
Universal life | ​ |  | 6,894.0 | ​ |  | 6,947.9
Corporate: | ​ |  | ​ | ​ |  |
Inter-segment eliminations | ​ |  | (356.5) | ​ |  | (362.7)
Total policyholder account balances for contracts with significant insurance risk or investment contracts with significant fee revenue | ​ |  | 25,712.5 | ​ |  | 26,349.6
​ | ​ | ​ | ​ | ​ | ​ | ​
Reconciling items: | ​ |  | ​ | ​ |  |
Investment contracts without significant fee revenue (1) | ​ |  | 16,267.3 | ​ |  | 16,104.0
Embedded derivatives (2) | ​ |  | 69.6 | ​ |  | 46.4
Other balances (3) | ​ |  | 330.5 | ​ |  | 325.3
Total contractholder funds per consolidated statements of financial position | ​ | $ | 42,379.9 | ​ | $ | 42,825.3
(1) | Includes GICs, funding agreements, individual fixed income annuities and guaranteed pension contracts. These contracts are not included within the disaggregated rollforward or guaranteed minimum interest rate (“GMIR”) disclosures below.
(2) | Refer to Note 16, Fair Value Measurements, for details on the changes in Level 3 fair value measurements of embedded derivatives.
(3) | Includes insignificant balances for long-duration contracts and amounts that are not accrued to the benefit of the contractholder and, therefore, are not included within the disaggregated rollforward or GMIR disclosures below.
Schedule of guaranteed minimum interest rate (Table) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2023
​ | ​ | Excess of crediting rates over GMIR
​ | ​ | ​ | ​ | Up to 0.50% | ​ | 0.51% to 1.00% | ​ | 1.01% to 2.00% | ​ | 2.01% or more | ​ | ​
​ |  | At GMIR |  | above GMIR |  | above GMIR |  | above GMIR |  | above GMIR |  | Total
​ |  | ​ | (in millions)
Retirement and Income Solutions |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Workplace savings and retirement solutions |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Up to 1.00% | ​ | $ | 0.2 |  | $ | 4.0 |  | $ | 118.6 |  | $ | 1,084.6 |  | $ | 241.1 |  | $ | 1,448.5
1.01% - 2.00% | ​ | ​ | — |  | ​ | 6,204.0 |  | ​ | 1,197.5 |  | ​ | — |  | ​ | 1,524.8 |  | ​ | 8,926.3
2.01% - 3.00% | ​ | ​ | 7.3 |  | ​ | 0.1 |  | ​ | 0.8 |  | ​ | 2.7 |  | ​ | — |  | ​ | 10.9
3.01% - 4.00% | ​ | ​ | 7.7 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 7.7
4.01% and above |  | ​ | 18.4 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 18.4
Subtotal |  | ​ | 33.6 |  | ​ | 6,208.1 |  | ​ | 1,316.9 |  | ​ | 1,087.3 |  | ​ | 1,765.9 |  | ​ | 10,411.8
No GMIR |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | 2,029.8
Total |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | $ | 12,441.6
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Individual variable annuities |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | ​
Up to 1.00% | ​ | $ | 25.0 |  | $ | — |  | $ | — |  | $ | — |  | $ | — |  | $ | 25.0
1.01% - 2.00% | ​ | ​ | 3.2 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 3.2
2.01% - 3.00% | ​ | ​ | 308.2 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 308.2
3.01% - 4.00% | ​ | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | —
4.01% and above |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | —
Subtotal |  | ​ | 336.4 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 336.4
No GMIR |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | 39.0
Total |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | $ | 375.4
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Individual fixed deferred annuities |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Up to 1.00% | ​ | $ | 366.6 |  | $ | 150.6 |  | $ | 175.7 |  | $ | 600.2 |  | $ | 1,038.6 |  | $ | 2,331.7
1.01% - 2.00% | ​ | ​ | 112.6 |  | ​ | 1.2 |  | ​ | 37.9 |  | ​ | 229.4 |  | ​ | 1.1 |  | ​ | 382.2
2.01% - 3.00% | ​ | ​ | 3,211.5 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 3,211.5
3.01% - 4.00% | ​ | ​ | 163.9 |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | 163.9
4.01% and above |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | — |  | ​ | —
Subtotal |  | ​ | 3,854.6 |  | ​ | 151.8 |  | ​ | 213.6 |  | ​ | 829.6 |  | ​ | 1,039.7 |  | ​ | 6,089.3
No GMIR |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | 268.7
Total |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | $ | 6,358.0
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Benefits and Protection - Life Insurance |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Universal life |  | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
Up to 1.00% | ​ | $ | — |  | $ | 1.7 |  | $ | 15.9 |  | $ | — |  | $ | 1.4 |  | $ | 19.0
1.01% - 2.00% | ​ | ​ | 306.0 |  | ​ | — |  | ​ | 414.1 |  | ​ | 723.3 |  | ​ | 132.0 |  | ​ | 1,575.4
2.01% - 3.00% | ​ | ​ | 825.1 |  | ​ | 851.6 |  | ​ | 933.2 |  | ​ | 61.6 |  | ​ | 0.7 |  | ​ | 2,672.2
3.01% - 4.00% | ​ | ​ | 1,689.2 |  | ​ | 31.7 |  | ​ | 30.6 |  | ​ | 29.0 |  | ​ | 3.2 |  | ​ | 1,783.7
4.01% and above |  | ​ | 38.9 |  | ​ | 11.7 |  | ​ | 3.4 |  | ​ | 1.5 |  | ​ | — |  | ​ | 55.5
Subtotal |  | ​ | 2,859.2 |  | ​ | 896.7 |  | ​ | 1,397.2 |  | ​ | 815.4 |  | ​ | 137.3 |  | ​ | 6,105.8
No GMIR |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | ​ |  | ​ | 788.2
Total |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | $ | 6,894.0
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2022
​ | ​ | Excess of crediting rates over GMIR
​ | ​ | ​ | ​ | ​ | Up to 0.50% | ​ | 0.51% to 1.00% | ​ | 1.01% to 2.00% | ​ | 2.01% or more | ​ | ​ | ​
​ |  | At GMIR |  | above GMIR |  | above GMIR |  | above GMIR |  | above GMIR |  | Total
​ |  | (in millions)
Retirement and Income Solutions | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Workplace savings and retirement solutions | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Up to 1.00% | ​ | $ | 3.9 | ​ | $ | 24.8 | ​ | $ | 1,188.9 | ​ | $ | 307.8 | ​ | $ | 364.9 | ​ | $ | 1,890.3
1.01% - 2.00% | ​ |  | — | ​ |  | 549.9 | ​ |  | 6,090.2 | ​ |  | 1,477.0 | ​ |  | 9.4 | ​ |  | 8,126.5
2.01% - 3.00% | ​ |  | 15.1 | ​ |  | 0.1 | ​ |  | — | ​ |  | 0.1 | ​ |  | — | ​ |  | 15.3
3.01% - 4.00% | ​ |  | 7.8 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 7.8
4.01% and above | ​ |  | 18.8 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 18.8
Subtotal | ​ |  | 45.6 | ​ |  | 574.8 | ​ |  | 7,279.1 | ​ |  | 1,784.9 | ​ |  | 374.3 | ​ |  | 10,058.7
No GMIR | ​ |  | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 2,096.0
Total | ​ | ​ | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | 12,154.7
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Individual variable annuities | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Up to 1.00% | ​ | $ | 33.0 | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | — | ​ | $ | 33.0
1.01% - 2.00% | ​ |  | 3.6 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3.6
2.01% - 3.00% | ​ |  | 331.8 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 331.8
3.01% - 4.00% | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
4.01% and above | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Subtotal | ​ |  | 368.4 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 368.4
No GMIR | ​ |  | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 13.0
Total | ​ | ​ | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | 381.4
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Individual fixed deferred annuities | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Up to 1.00% | ​ | $ | 426.4 | ​ | $ | 161.7 | ​ | $ | 236.2 | ​ | $ | 879.2 | ​ | $ | 993.0 | ​ | $ | 2,696.5
1.01% - 2.00% | ​ |  | 139.8 | ​ |  | 1.4 | ​ |  | 39.9 | ​ |  | 250.5 | ​ |  | 0.6 | ​ |  | 432.2
2.01% - 3.00% | ​ |  | 3,617.1 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3,617.1
3.01% - 4.00% | ​ |  | 169.7 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 169.7
4.01% and above | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Subtotal | ​ |  | 4,353.0 | ​ |  | 163.1 | ​ |  | 276.1 | ​ |  | 1,129.7 | ​ |  | 993.6 | ​ |  | 6,915.5
No GMIR | ​ |  | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 312.8
Total | ​ | ​ | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | 7,228.3
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Benefits and Protection - Life Insurance | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Universal life | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Up to 1.00% | ​ | $ | — | ​ | $ | 8.4 | ​ | $ | 10.1 | ​ | $ | — | ​ | $ | 0.7 | ​ | $ | 19.2
1.01% - 2.00% | ​ |  | 315.7 | ​ |  | — | ​ |  | 407.0 | ​ |  | 695.5 | ​ |  | 155.0 | ​ |  | 1,573.2
2.01% - 3.00% | ​ |  | 865.9 | ​ |  | 951.2 | ​ |  | 903.5 | ​ |  | 59.9 | ​ |  | 0.4 | ​ |  | 2,780.9
3.01% - 4.00% | ​ |  | 1,698.9 | ​ |  | 35.8 | ​ |  | 21.9 | ​ |  | 25.3 | ​ |  | 3.2 | ​ |  | 1,785.1
4.01% and above | ​ |  | 40.6 | ​ |  | 10.1 | ​ |  | 3.4 | ​ |  | 1.6 | ​ |  | — | ​ |  | 55.7
Subtotal | ​ |  | 2,921.1 | ​ |  | 1,005.5 | ​ |  | 1,345.9 | ​ |  | 782.3 | ​ |  | 159.3 | ​ |  | 6,214.1
No GMIR | ​ |  | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  | 733.8
Total | ​ | ​ | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ | $ | 6,947.9
Retirement and Income Solutions |
Policyholder account balances |
Schedule of changes in policyholder account balances (Table) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the six months ended June 30, 2023 | ​ | For the year ended December 31, 2022 |
​ | ​ | Workplace | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Workplace | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | savings and | ​ | Individual | ​ | Individual | ​ | savings and | ​ | Individual | ​ | Individual |
​ | ​ | retirement | ​ | variable | ​ | fixed deferred | ​ | retirement | ​ | variable | ​ | fixed deferred |
​ |  | solutions |  | annuities |  | annuities (1) |  | solutions |  | annuities |  | annuities (1) |
​ | ​ | ($ in millions) |
Balance at beginning of period | ​ | $ | 12,154.7 | ​ | $ | 381.4 | ​ | $ | 7,228.3 | ​ | $ | 10,996.2 | ​ | $ | 380.9 | ​ | $ | 9,646.3 | ​
Premiums and deposits | ​ |  | 2,267.6 | ​ |  | 245.2 | ​ |  | 21.5 | ​ |  | 3,719.5 | ​ |  | 426.5 | ​ |  | 35.9 | ​
Policy charges | ​ |  | (15.4) | ​ |  | — | ​ |  | — | ​ |  | (28.5) | ​ |  | — | ​ |  | — | ​
Surrenders, withdrawals and benefit payments | ​ |  | (2,715.1) | ​ |  | (507.1) | ​ |  | (975.7) | ​ |  | (2,866.7) | ​ |  | (843.2) | ​ |  | (2,655.6) | ​
Net transfers from (to) separate account (2) | ​ |  | 633.8 | ​ |  | 250.9 | ​ |  | — | ​ |  | 164.6 | ​ |  | 406.6 | ​ |  | — | ​
Interest credited | ​ |  | 130.1 | ​ |  | 5.0 | ​ |  | 83.9 | ​ |  | 194.3 | ​ |  | 10.6 | ​ |  | 201.7 | ​
Other | ​ |  | (14.1) | ​ |  | — | ​ |  | — | ​ |  | (24.7) | ​ |  | — | ​ |  | — | ​
Balance at end of period | ​ | $ | 12,441.6 | ​ | $ | 375.4 | ​ | $ | 6,358.0 | ​ | $ | 12,154.7 | ​ | $ | 381.4 | ​ | $ | 7,228.3 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average crediting rate (3) | ​ |  | 2.27 | % |  | 2.82 | % |  | 2.72 | % |  | 1.94 | % |  | 2.79 | % |  | 2.63 | %
Cash surrender value (4) | ​ | $ | 10,757.6 | ​ | $ | 347.4 | ​ | $ | 6,233.6 | ​ | $ | 10,341.7 | ​ | $ | 378.6 | ​ | $ | 7,081.4 | ​
(1) | We use the deposit method of accounting for the reinsurance of this exited business.
(2) | Within the separate account liabilities rollforwards in Note 6, Separate Account Balances, these transfers for Individual variable annuities and Workplace savings and retirement solutions included in Group retirement contracts are reflected in premiums and deposits; surrenders, withdrawals and benefit payments; and net transfers (to) from general account.
(3) | The weighted-average crediting rate is calculated on a year-to-date basis based on account value.
(4) | Cash surrender value represents the amount of the contractholders’ account balances distributable at the end of the reporting period less surrender charges.
Universal life | Benefits and Protection | Life Insurance |
Policyholder account balances |
Schedule of changes in policyholder account balances (Table) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the six months ended |  | For the year ended |
​ | ​ | June 30, 2023 | ​ | December 31, 2022 |
​ | ​ | ($ in millions) |
Balance at beginning of period | ​ | $ | 6,947.9 | ​ | $ | 6,962.5 | ​
Premiums and deposits | ​ |  | 630.2 | ​ |  | 1,267.2 | ​
Policy charges | ​ |  | (426.0) | ​ |  | (837.8) | ​
Surrenders, withdrawals and benefit payments | ​ |  | (275.9) | ​ |  | (390.0) | ​
Net transfers from (to) separate account (1) | ​ |  | (94.7) | ​ |  | (301.5) | ​
Interest credited | ​ |  | 113.1 | ​ |  | 247.5 | ​
Other | ​ |  | (0.6) | ​ |  | — | ​
Balance at end of period | ​ |  | 6,894.0 | ​ |  | 6,947.9 | ​
Reinsurance impact | ​ | ​ | (3,455.6) | ​ | ​ | (3,528.9) | ​
Balance at end of period after reinsurance | ​ | $ | 3,438.4 | ​ | $ | 3,419.0 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted-average crediting rate (2) | ​ |  | 3.55 | % |  | 3.35 | %
Net amount at risk (3) | ​ | $ | 86,553.9 | ​ | $ | 86,547.9 | ​
Cash surrender value (4) | ​ | $ | 5,884.1 | ​ | $ | 5,911.5 | ​
(1) | Within the separate account liabilities rollforwards in Note 6, Separate Account Balances, these transfers are reflected in premiums and deposits; surrenders, withdrawals and benefit payments; and net transfers (to) from general account.
(2) | The weighted-average crediting rate is calculated on a year-to-date basis based on account value, including indexed credits.
(3) | For those guarantees of benefits that are payable in the event of death, the net amount at risk is generally defined as the death benefit in excess of the current account balance or the fixed death benefit at the consolidated statement of financial position date.
(4) | Cash surrender value represents the amount of the contractholders’ account balances distributable at the end of the reporting period less surrender charges.

X
- Definition Tabular disclosure of the disaggregated policyholder account balance amounts and reconcile the totals to contractholder funds reported in the consolidated statements of financial position. + References No definition available. + Details
Name: | pfg_ScheduleOfDisaggregatedPolicyholderAccountBalanceAmountsAndReconcileTotalsToContractholderFundsTableTextBlock
Namespace Prefix: | pfg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of policyholder account balance by range of guaranteed minimum crediting rate and related range of difference between rate being credited to policyholder and respective guaranteed minimum. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalanceGuaranteedMinimumCreditingRateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalanceLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about policyholder account balance, including, but not limited to change in liability and related cash surrender value. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29F -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29F Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7A + Details
Name: | us-gaap_PolicyholderAccountBalanceTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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

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

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

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