REDEEMABLE NONCONTROLLING INTERESTS - Rollforward of Redeemable Noncontrolling Interest (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2019 |
Apr. 30, 2018 |
|
| Redeemable Noncontrolling Interest, Equity [Roll Forward] | ||||
| October 31, 2018 | $ 35.5 | |||
| Current period mark to redemption value | (1.0) | |||
| Repurchase of redeemable shareholder interest | (11.9) | |||
| Redeemable noncontrolling interest share of income and other | $ 0.5 | $ 0.8 | 1.3 | $ 1.9 |
| Dividends to redeemable noncontrolling interest and other | 0.4 | |||
| April 30, 2019 | $ 24.3 | $ 24.3 | ||