INCOME TAXES - Federal Income Tax Returns by Jurisdiction (Details)	12 Months Ended
	Dec. 31, 2018
United States - Federal | Minimum
Income Taxes
Open Years	2014
United States - Federal | Maximum
Income Taxes
Open Years	2017
Canada | Minimum
Income Taxes
Open Years	2005
Canada | Maximum
Income Taxes
Open Years	2017
Germany | Minimum
Income Taxes
Open Years	2013
Germany | Maximum
Income Taxes
Open Years	2017
France | Minimum
Income Taxes
Open Years	2013
France | Maximum
Income Taxes
Open Years	2017
China | Minimum
Income Taxes
Open Years	2015
China | Maximum
Income Taxes
Open Years	2017
Ireland | Minimum
Income Taxes
Open Years	2013
Ireland | Maximum
Income Taxes
Open Years	2017
Netherlands | Minimum
Income Taxes
Open Years	2015
Netherlands | Maximum
Income Taxes
Open Years	2017
Australia | Minimum
Income Taxes
Open Years	2011
Australia | Maximum
Income Taxes
Open Years	2017