LINES OF CREDIT Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Line of credit, maximum borrowing capacity	$ 1,500
Line of credit, expiration date	Mar. 31, 2022
Borrowings from lines of credit	$ 0
Repayments of lines of credit	0
Prior Credit Facility
Line of credit, maximum borrowing capacity	$ 1,000
Line of credit, expiration date	Sep. 30, 2018