FINANCING ARRANGEMENTS - Summary of Redemption Prices (Details) - Unsecured debt	9 Months Ended
	Sep. 30, 2019
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	100.00%
Unsecured senior notes, at 4.875%, due July 15, 2027 (2027 Notes)
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	104.875%
Unsecured senior notes, at 4.875%, due July 15, 2027 (2027 Notes) | Debt Instrument, Redemption, Period One
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	102.438%
Unsecured senior notes, at 4.875%, due July 15, 2027 (2027 Notes) | Debt Instrument, Redemption, Period Two
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	101.219%
Unsecured senior notes, at 4.875%, due July 15, 2027 (2027 Notes) | Debt Instrument, Redemption, Period Three
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	100.00%
Unsecured senior notes, at 5.125%, due July 15, 2029 (2029 Notes)
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	105.125%
Unsecured senior notes, at 5.125%, due July 15, 2029 (2029 Notes) | Debt Instrument, Redemption, Period One
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	102.563%
Unsecured senior notes, at 5.125%, due July 15, 2029 (2029 Notes) | Debt Instrument, Redemption, Period Two
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	101.281%
Unsecured senior notes, at 5.125%, due July 15, 2029 (2029 Notes) | Debt Instrument, Redemption, Period Three
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	100.00%