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Note 6 - Revenues (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Insurance: |  |  |  |  |  |  |  |  |  |  |  |
Underwriting & rating |  | $ | 1,555.1 |  |  | $ | 1,413.0 |  |  | $ | 1,274.5 |
Claims |  |  | 651.8 |  |  |  | 595.7 |  |  |  | 610.9 |
Total Insurance |  |  | 2,206.9 |  |  |  | 2,008.7 |  |  |  | 1,885.4 |
Energy and Specialized Markets |  |  | 648.9 |  |  |  | 619.2 |  |  |  | 543.7 |
Financial Services |  |  | 142.8 |  |  |  | 156.7 |  |  |  | 178.0 |
Total revenues |  | $ | 2,998.6 |  |  | $ | 2,784.6 |  |  | $ | 2,607.1 |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 2,285.5 |  |  | $ | 2,133.6 |  |  | $ | 2,005.6 |
United Kingdom |  |  | 204.4 |  |  |  | 181.6 |  |  |  | 177.3 |
Other countries |  |  | 508.7 |  |  |  | 469.4 |  |  |  | 424.2 |
Total revenues |  | $ | 2,998.6 |  |  | $ | 2,784.6 |  |  | $ | 2,607.1 |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
Contract Liabilities at December 31, 2019 |  | $ | 443.2 |
Revenue |  |  | (2,784.6 | )
Billings |  |  | 2,809.6 |
Contract Liabilities at December 31, 2020 |  |  | 468.2 |
Revenue |  |  | (2,998.6 | )
Billings |  |  | 3,035.2 |
Contract Liabilities at December 31, 2021 |  | $ | 504.8 |

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