RECENT ACCOUNTING PRONOUNCEMENTS Adoption of ASU 2016-13: Opening Balance Sheet Cumulative Effect Adjustments (Details) - USD ($) $ in Millions	Jan. 01, 2020	Dec. 31, 2019
Receivable [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance as of December 31, 2019 - Prior to Adoption of ASU 2016-13		$ 578.4
Balance as of January 1, 2020 - Subsequent to Adoption of ASU 2016-13	$ 576.8
Receivable [Domain] | Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	1.6
Other Current Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance as of December 31, 2019 - Prior to Adoption of ASU 2016-13		153.4
Balance as of January 1, 2020 - Subsequent to Adoption of ASU 2016-13	153.3
Other Current Assets [Member] | Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	0.1
Deferred Tax Asset [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance as of December 31, 2019 - Prior to Adoption of ASU 2016-13		138.1
Balance as of January 1, 2020 - Subsequent to Adoption of ASU 2016-13	138.6
Deferred Tax Asset [Domain] | Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	(0.5)
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Balance as of December 31, 2019 - Prior to Adoption of ASU 2016-13		$ 2,372.4
Balance as of January 1, 2020 - Subsequent to Adoption of ASU 2016-13	2,371.2
Retained Earnings [Member] | Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 1.2