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Revenues from Contracts with Customers - Disaggregation by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total fees and other revenues per consolidated statements of operations | $ 1,251.8 | $ 1,143.0 | $ 3,711.0 | $ 3,332.6
Operating Segments |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 796.5 | 681.9 | 2,329.8 | 2,035.6
Operating Segments | Retirement and Income Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 146.6 | 135.5 | 441.0 | 447.2
Operating Segments | Principal Global Investors |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 453.5 | 377.0 | 1,303.6 | 1,108.1
Fees and other revenues not within the scope of revenue recognition guidance | 11.0 | 4.8 | 27.1 | 14.2
Total fees and other revenues per consolidated statements of operations | 464.5 | 381.8 | 1,330.7 | 1,122.3
Operating Segments | Principal International |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 125.1 | 111.1 | 373.5 | 322.2
Fees and other revenues not within the scope of revenue recognition guidance | 1.0 | 1.4 | 3.1 | 4.2
Total fees and other revenues per consolidated statements of operations | 126.1 | 112.5 | 376.6 | 326.4
Operating Segments | U.S. Insurance Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 19.7 | 15.9 | 55.8 | 46.9
Operating Segments | Corporate |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 51.6 | 42.4 | 155.9 | 111.2
Fees and other revenues not within the scope of revenue recognition guidance | (91.8) | (75.8) | (266.3) | (221.1)
Total fees and other revenues per consolidated statements of operations | (40.2) | (33.4) | (110.4) | (109.9)
Operating Segments | Retirement and Income Solutions - Fee | Retirement and Income Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 144.2 | 133.4 | 433.8 | 441.0
Fees and other revenues not within the scope of revenue recognition guidance | 324.1 | 293.5 | 964.3 | 829.1
Total fees and other revenues per consolidated statements of operations | 468.3 | 426.9 | 1,398.1 | 1,270.1
Operating Segments | Retirement and Income Solutions - Spread | Retirement and Income Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 2.4 | 2.1 | 7.2 | 6.2
Fees and other revenues not within the scope of revenue recognition guidance | 2.1 | 1.9 | 6.8 | 7.8
Total fees and other revenues per consolidated statements of operations | 4.5 | 4.0 | 14.0 | 14.0
Operating Segments | Specialty Benefits insurance | U.S. Insurance Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 3.9 | 3.9 | 11.4 | 11.2
Fees and other revenues not within the scope of revenue recognition guidance | 5.4 | 4.9 | 14.9 | 14.4
Total fees and other revenues per consolidated statements of operations | 9.3 | 8.8 | 26.3 | 25.6
Operating Segments | Individual Life insurance | U.S. Insurance Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers | 15.8 | 12.0 | 44.5 | 35.8
Fees and other revenues not within the scope of revenue recognition guidance | 204.1 | 232.6 | 635.8 | 634.4
Total fees and other revenues per consolidated statements of operations | 219.9 | 244.6 | 680.3 | 670.2
Operating Segments | U.S. Insurance Solutions Eliminations | U.S. Insurance Solutions |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Total segment revenue from contracts with customers |  |  | (0.1) | (0.1)
Reconciling Items |  |  |  |
Revenues from Contracts with Customers - Disaggregation of Revenues |  |  |  |
Fees and other revenues not within the scope of revenue recognition guidance | 455.9 | 463.3 | 1,385.7 | 1,283.0
Pre-tax other adjustments | $ (0.6) | $ (2.2) | $ (4.5) | $ 14.0

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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