DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Debt Restructuring) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	$ 1,070.8
Gain (loss) on extinguishment/restructuring of debt	(71.9)	$ 178.8
$218.5 Million 8.00% 2020 Lien Notes [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	218.5
Gain (loss) on extinguishment/restructuring of debt	45.1
$544 Million 7.75% 2020 Lien Notes[Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	430.1
Gain (loss) on extinguishment/restructuring of debt	(104.5)
$400 Million 5.90% 2020 Senior Notes [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	136.8
Gain (loss) on extinguishment/restructuring of debt	(7.8)
Five Hundred Million Four Point Eight Zero Percent Senior Note [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	114.4
Gain (loss) on extinguishment/restructuring of debt	(1.9)
$700 Million 4.875% 2021 Senior Note [Member]
Extinguishment of Debt [Line Items]
Extinguishment of Debt, Amount	171.0
Gain (loss) on extinguishment/restructuring of debt	$ (2.8)