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Note 23 - Schedule II Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
SEC Schedule, 12-09, Allowance, Credit Loss [Member] |  |  |  |
Balance |  | $ 11.7 | $ 5.7 | $ 4.6
Charged to Expenses / Against Revenue | [1] | 13.1 | 7.2 | 5.6
Deductions - Write-offs | [2] | (7.1) | (1.2) | (4.5)
Balance |  | 17.7 | 11.7 | 5.7
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] |  |  |  |
Balance |  | 46.5 | 34.5 | 17.6
Charged to Expenses / Against Revenue | [1] | 10.7 | 16.7 | 21.2
Deductions - Write-offs | [2] | (9.2) | (4.7) | (4.3)
Balance |  | $ 48.0 | $ 46.5 | $ 34.5
[1] | Primarily additional reserves for bad debts
[2] | Primarily accounts receivable balances written off, net of recoveries, the expiration of loss carryforwards and businesses held for sale

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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