SUPPLEMENTAL CASH FLOW INFORMATION Description Information - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Debt Conversion [Line Items]
Decrease in Capital Expenditures Incurred but not yet Paid	$ (24.5)
Capital Expenditures Incurred but Not yet Paid		$ (15.9)
Notes Receivable, Fair Value Disclosure	0.0	110.0
Cash paid during period for:
Interest	195.8	216.5
Income taxes, net of refunds	217.5	181.6
Disclosure of non-cash financing and investing activities:
Conversion of zero-coupon convertible debt	$ 0.0	$ 1.7