INCOME TAXES (SUMMARY OF OPERATING LOSS CARRYFORWARDS) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 2,522.6
2023 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2023
Net operating loss carryforwards	$ 1,936.0
2025 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2025
Net operating loss carryforwards	$ 85.2
2026 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2026
Net operating loss carryforwards	$ 149.9
2027 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2027
Net operating loss carryforwards	$ 10.8
2028 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2028
Net operating loss carryforwards	$ 80.3
2029 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2029
Net operating loss carryforwards	$ 213.2
2030 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2030
Net operating loss carryforwards	$ 0.3
2031 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2031
Net operating loss carryforwards	$ 0.2
2032 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2032
Net operating loss carryforwards	$ 44.4
2033 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2033
Net operating loss carryforwards	$ 0.6
2034 [Member]
Operating Loss Carryforwards [Line Items]
Year of expiration	Dec. 31, 2034
Net operating loss carryforwards	$ 1.7