LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Leverage summary (Details)		3 Months Ended	12 Months Ended
		Mar. 31, 2020	Dec. 31, 2019
2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage	[1]	1.94%
Euro Loans [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		2.2	2.4
2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage	[2]	1.50%
Net Leverage Greater Than 7.0x [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		6.50%
Net Leverage Greater Than 7.0x [Member] | Euro Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		7.0
Net Leverage Greater Than 7.0x [Member] | 2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		6.00%
Net Leverage 7.0x - 6.0x [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		5.50%
Net Leverage 7.0x - 6.0x [Member] | Euro Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		6.0
Net Leverage 7.0x - 6.0x [Member] | Euro Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		7.0
Net Leverage 7.0x - 6.0x [Member] | 2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		5.00%
Net Leverage 6.0x - 5.0x [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		4.75%
Net Leverage 6.0x - 5.0x [Member] | Euro Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		5.0
Net Leverage 6.0x - 5.0x [Member] | Euro Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		6.0
Net Leverage 6.0x - 5.0x [Member] | 2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		4.25%
Net Leverage 5.0x - 4.0x [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		4.25%
Net Leverage 5.0x - 4.0x [Member] | Euro Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		4.0
Net Leverage 5.0x - 4.0x [Member] | Euro Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		5.0
Net Leverage 5.0x - 4.0x [Member] | 2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		3.75%
Net Leverage 4.0x - 3.0x [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		3.75%
Net Leverage 4.0x - 3.0x [Member] | Euro Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		3.0
Net Leverage 4.0x - 3.0x [Member] | Euro Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		4.0
Net Leverage 4.0x - 3.0x [Member] | 2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		3.25%
Net Leverage Less Than 3.0x [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		3.50%
Net Leverage Less Than 3.0x [Member] | Euro Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Financial Covenant, Net Leverage		3.0
Net Leverage Less Than 3.0x [Member] | 2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Guarantee Fee, Stated Percentage		3.25%

[1] Effective until February 19, 2021. From February 19, 2021 through maturity on April 26, 2023, the rate fixed pursuant to interest rate hedges will increase to 0.97%, with a corresponding decrease in the Guarantee Fee rate, such that the all-in borrowing rate remains 3.50% if our net leverage ratio remains unchanged.

[2]   Base Rate
  Rate Fixed Pursuant to Interest Rate Hedges
  Guarantee Fee Rate
  All-in Borrowing Rate
2021 Euro Loan 1.28 %   0.47 %   1.50 %   3.25 % 2023 Euro Loan 1.28 %   0.28 % ⁽¹⁾  1.94 %   3.50 % 2023 Revolving Credit Facility (if drawn) 4.70 % ⁽²⁾  — %   — %   4.70 %