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Note 12 - Goodwill and Intangible Assets - Summary of Changes in Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Goodwill |  | $ 3,864.3 | $ 3,361.5
Acquisitions |  | 171.7 | 453.5
Businesses held for sale and disposition |  |  | (8.6)
Purchase accounting reclassifications |  | (4.1) | (1.5)
Foreign currency translation adjustment |  | 74.3 | 59.4
Current period adjustment (1) | [1] | 1.9 |
Goodwill |  | 4,108.1 | 3,864.3
Insurance [Member] |  |  |
Goodwill |  | 998.8 | 833.8
Acquisitions |  | 171.7 | 161.0
Businesses held for sale and disposition |  |  | (7.9)
Purchase accounting reclassifications |  | 2.1 | (1.4)
Foreign currency translation adjustment |  | 14.6 | 13.3
Current period adjustment (1) | [1] | 21.4 |
Goodwill |  | 1,208.6 | 998.8
Energy and Specialized Markets [Member] |  |  |
Goodwill |  | 2,389.5 | 2,054.7
Acquisitions |  | 0.0 | 288.5
Businesses held for sale and disposition |  |  | 0.0
Purchase accounting reclassifications |  | (6.0) | 0.0
Foreign currency translation adjustment |  | 59.6 | 46.3
Current period adjustment (1) | [1] | (19.5) |
Goodwill |  | 2,423.6 | 2,389.5
Financial Services [Member] |  |  |
Goodwill |  | 476.0 | 473.0
Acquisitions |  | 0.0 | 4.0
Businesses held for sale and disposition |  |  | (0.7)
Purchase accounting reclassifications |  | (0.2) | (0.1)
Foreign currency translation adjustment |  | 0.1 | (0.2)
Current period adjustment (1) | [1] | 0.0 |
Goodwill |  | $ 475.9 | $ 476.0
[1] | Of which $19.5 million relates to a segment reclassification, refer to Note 19. Segment Reporting

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