DEBT - Letters of Credit and Performance and Bid Bonds (Details) $ in Millions	Mar. 31, 2020 USD ($)
Line of Credit Facility [Line Items]
Letters of credit outstanding	$ 33.3
Cash collateral	4.7
Various Uncommitted Facilities
Line of Credit Facility [Line Items]
Letters of credit outstanding	27.7
2020 Credit Agreement | Letter of Credit
Line of Credit Facility [Line Items]
Letters of credit outstanding	$ 5.6