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RECENT ACCOUNTING PRONOUNCEMENTS Adoption of ASU 2016-13: Opening Balance Sheet Cumulative Effect Adjustments (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net	$ 490.2		$ 578.4
Other current assets	171.8		153.4
Deferred income taxes	182.3		138.1
Retained earnings	$ 2,341.9		$ 2,372.4
Accounting Standards Update 2016-13 [Member] \| Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net		$ (1.6)
Other current assets		(0.1)
Deferred income taxes		0.5
Retained earnings		(1.2)
Accounting Standards Update 2016-13 [Member] \| Cumulative Effect, Period of Adoption, Adjusted Balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Receivables, net		576.8
Other current assets		153.3
Deferred income taxes		138.6
Retained earnings		$ 2,371.2