Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reserve for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning Balance	$ 26.5	$ 45.2	$ 30.3
Valuation Allowances and Reserves, Charged to Cost and Expense	11.1	36.4	99.2
Valuation Allowances and Reserves, Adjustments	(0.2)	(1.7)	2.8
Valuation Allowances and Reserves, Deductions	(8.7)	(41.2)	(87.1)
Valuation Allowances and Reserves, Balance, Ending Balance	28.7	26.5	45.2
Inventory Reserves (including excess, obsolescence and shrink reserves)
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning Balance	83.9	74.8	94.2
Valuation Allowances and Reserves, Charged to Cost and Expense	56.0	53.7	11.7
Valuation Allowances and Reserves, Adjustments	(0.2)	(2.0)	4.5
Valuation Allowances and Reserves, Deductions	(61.6)	(42.6)	(35.6)
Valuation Allowances and Reserves, Balance, Ending Balance	$ 78.1	83.9	74.8
ASU 2014-09 \| Reserve for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Beginning Balance		$ 33.0
Valuation Allowances and Reserves, Balance, Ending Balance			$ 33.0

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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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

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

+ References

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Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense.

+ References

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Amount of decrease in valuation and qualifying accounts and reserves.

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