GOODWILL AND INTANGIBLE ASSETS - ADDITIONAL INFORMATION (Details)	3 Months Ended				12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) reporting_unit	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Number of reporting units | reporting_unit					11
Goodwill [Line Items]
Goodwill impairment	$ 558,000,000	$ 0	$ 1,092,900,000	$ 0	$ 1,650,900,000	$ 0	$ 0
Indefinite-lived intangible asset impairment					346,700,000	0	0
Impairments of finite-lived identifiable intangible assets						0	3,700,000
Amortization of intangible assets					189,100,000	$ 155,100,000	$ 43,800,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2018	189,900,000				189,900,000
2019	189,500,000				189,500,000
2020	189,300,000				189,300,000
2021	183,400,000				183,400,000
2022	171,800,000				171,800,000
Technologies & Equipment
Goodwill [Line Items]
Goodwill impairment	558,000,000		1,092,900,000		1,650,900,000
Indefinite-lived intangible asset impairment	$ 266,900,000		$ 79,800,000		$ 346,700,000
Minimum
Goodwill [Line Items]
Years used in cash flow forecasting					5 years
Cash flows discounted range lower limit					7.80%
Maximum
Goodwill [Line Items]
Years used in cash flow forecasting					10 years
Cash flows discounted range lower limit					9.50%