EARNINGS PER SHARE - Additional Information (Detail) - shares	3 Months Ended	12 Months Ended
	Jan. 31, 2019	Oct. 31, 2017
Class A Common Stock
Class of Stock [Line Items]
Percentage of shares outstanding used in two class method calculation	40.00%
Class B Common Stock
Class of Stock [Line Items]
Percentage of shares outstanding used in two class method calculation	60.00%
Board Of Director Authorized
Class of Stock [Line Items]
Number of shares authorized to be purchased (shares)	4,703,487
Stock Repurchase Committee Authorized
Class of Stock [Line Items]
Repurchase of common stock (shares)	0	2,000