EQUITY (Narrative) (Details) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) shares
Equity Contract
Schedule Of Changes In Equity [Line Items]
Remaining equity distribution agreement amount	$ 246.3
401K Plan, DRSPP, and Shared Based Compensation Plans
Schedule Of Changes In Equity [Line Items]
Stock issued during period for stock options exercised and under 401(K) plan and DRSPP (in shares) | shares	1.2
Proceeds from stock issuance	$ 35.1