STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - ISSUANCE OF COMMON STOCK (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	Mar. 31, 2017	Jul. 31, 2017	Jul. 31, 2016
Statement of Stockholders' Equity [Abstract]
Stock Issued During Period, Shares, New Issues	13,142,856
Proceeds from Issuance of Common Stock	$ 444	$ 444	$ 0