SIGNIFICANT ACCOUNTING POLICIES - Depreciation (Details)	12 Months Ended
	Dec. 31, 2016
Buildings | Minimum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	30 years
Buildings | Maximum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	50 years
Building equipment | Minimum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	10 years
Building equipment | Maximum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	20 years
Land improvements
Depreciation and amortization
Estimated useful lives of certain depreciable assets	20 years
Plant, laboratory and office equipment | Minimum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	2 years
Plant, laboratory and office equipment | Maximum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	20 years
Computer equipment | Minimum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	1 year 6 months
Computer equipment | Maximum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	5 years
Leasehold improvements | Maximum
Depreciation and amortization
Estimated useful lives of certain depreciable assets	25 years