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Schedule II - Consolidated Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance for doubtful accounts and sales allowances |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of year | $ 20.3 | $ 23.1 | $ 12.7
Additions charged to costs and expenses | 11.7 | 8.4 | 11.9
Deductions | (10.2) | (7.9) | (7.3)
Other | 7.3 | (3.3) | 5.8
Balance at end of year | 29.1 | 20.3 | 23.1
Reserve for inventory obsolescence |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at beginning of year | 33.4 | 30.3 | 38.1
Additions charged to costs and expenses | 9.6 | 6.3 | 6.7
Deductions | (3.9) | (3.2) | (4.5)
Other | 1.3 | 0.0 | (10.0)
Balance at end of year | $ 40.4 | $ 33.4 | $ 30.3

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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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