ACQUISITIONS - Intangible Assets Acquired (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Business Acquisition [Line Items]
Intangible assets acquired	$ 508
Customer relationships
Business Acquisition [Line Items]
Intangible assets acquired	$ 215
Weighted average useful life	20 years
Technology - Know-how
Business Acquisition [Line Items]
Intangible assets acquired	$ 61
Weighted average useful life	15 years
Technology - Patented
Business Acquisition [Line Items]
Intangible assets acquired	$ 12
Weighted average useful life	5 years
Quarry Rights
Business Acquisition [Line Items]
Intangible assets acquired	$ 7
Weighted average useful life	45 years
Trademarks
Business Acquisition [Line Items]
Intangible assets acquired	$ 213