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Schedule II Valuation and Qualifying Accounts and Reserves Schedule II (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2019 | May 31, 2018 | May 31, 2017
Allowance for doubtful accounts [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at Beginning of Year |  | $ 12.4 | $ 13.7 | $ 16.1
Expensed |  |  | 9.5 | 11.0
Write-Offs and Other |  | 7.8 | 10.8 | 13.4
Balance at End of Year |  | 11.6 | 12.4 | 13.7
Reserve For Return [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at Beginning of Year |  | 30.0 | 36.3 | 32.1
Expensed |  | 67.2 | 54.5 | 80.4
Write-Offs and Other | [1] | 62.7 | 60.8 | 76.2
Balance at End of Year |  | 34.5 | 30.0 | 36.3
Reserves for obsolescence [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at Beginning of Year |  | 67.5 | 71.9 | 73.9
Expensed |  | 20.8 | 18.4 | 16.0
Write-Offs and Other |  | 15.4 | 22.8 | 18.0
Balance at End of Year |  | 72.9 | 67.5 | 71.9
Reserve for royalty advances [Member] |  |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |
Balance at Beginning of Year |  | 97.0 | 93.8 | 90.1
Expensed |  | 6.8 | 4.1 | 4.3
Write-Offs and Other |  | 0.9 | 0.9 | 0.6
Balance at End of Year |  | $ 102.9 | $ 97.0 | $ 93.8
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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) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + 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) -URI http://asc.fasb.org/extlink&oid=26873400&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) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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