DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Debt Instrument Redemption) (Details) - $750 Million 5.875% 2027 Senior Notes [Member]	6 Months Ended
	Jun. 30, 2019
Debt Instrument, Redemption, Period One, Upon Equity Issuance [Member]
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption Price, Percentage	105.875%
Debt Instrument, Redemption, Period One, Including Premium [Member]
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption Price, Percentage	102.938%
Debt Instrument, Redemption, Period Three [Member]
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption Price, Percentage	101.958%
Debt Instrument, Redemption, Period Four [Member]
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption Price, Percentage	100.979%
Debt Instrument, Redemption, Period Five [Member]
Debt Instrument, Redemption [Line Items]
Debt Instrument, Redemption Price, Percentage	100.00%