ACCOUNTS AND OTHER RECEIVABLES - New ASU (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Trade receivables, net	$ 546.0		$ 564.4
Other current assets			973.7
Property, plant and equipment	809.5		830.8
Other assets			2,447.5
Total assets	4,982.0		4,816.4
Current liabilities	854.7		928.1
Long-term liabilities	2,888.7		2,575.8
Retained earnings	2,723.5		2,734.5
Other equity			(1,422.0)
Liabilities and Equity	$ 4,982.0		$ 4,816.4
Topic 326 Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Trade receivables, net		$ (3.3)
Other current assets		0.0
Property, plant and equipment		0.0
Other assets		0.0
Total assets		(3.3)
Current liabilities		0.0
Long-term liabilities		(0.8)
Retained earnings		(2.5)
Other equity		0.0
Liabilities and Equity		(3.3)
Adjusted balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Trade receivables, net		561.1
Other current assets		973.7
Property, plant and equipment		830.8
Other assets		2,447.5
Total assets		4,813.1
Current liabilities		928.1
Long-term liabilities		2,575.0
Retained earnings		2,732.0
Other equity		(1,422.0)
Liabilities and Equity		$ 4,813.1