STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY - ISSUANCE OF COMMON STOCK (Details) - USD ($) $ in Millions |
1 Months Ended | 6 Months Ended | |
|---|---|---|---|
Mar. 31, 2017 |
Apr. 30, 2017 |
Apr. 30, 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 |