LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Interest rate summary (Details)		3 Months Ended
		Mar. 31, 2020	Feb. 21, 2021
Debt Instrument [Line Items]
Document Period End Date		Mar. 31, 2020
Debt Instrument, Basis Spread on Variable Rate		1.45%
2021 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.28%
Derivative, Average Fixed Interest Rate	[1]	0.47%
Debt Instrument, Guarantee Fee, Stated Percentage	[1]	1.50%
Debt Instrument, Interest Rate, All-In Rate	[1]	3.25%
2023 Euro Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.28%
Derivative, Average Fixed Interest Rate	[2]	0.28%
Debt Instrument, Guarantee Fee, Stated Percentage	[2]	1.94%
Debt Instrument, Interest Rate, All-In Rate	[2]	3.50%
2023 Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	[3]	4.70%
Debt Instrument, Interest Rate, All-In Rate	[3]	4.70%
Forecast [Member] | 2023 Euro Loan [Member]
Debt Instrument [Line Items]
Derivative, Average Fixed Interest Rate	[2]		0.97%

[1]   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 %

[2] 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.

[3] Based on the three-month LIBOR of 1.45% as at March 31, 2020.