Employee Benefit Plans - Summary of Restricted Stock Award Activities Under Twenty Zero Five Directors Plan (Detail) - Restricted Stock shares in Thousands	12 Months Ended
	Oct. 31, 2018 $ / shares shares
Restricted shares
Beginning balance (in shares) | shares	38
Granted (in shares) | shares	15
Vested (in shares) | shares	(32)
Forfeited (in shares) | shares	(1)
Ending balance (in shares) | shares	20
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Beginning balance (in USD per share) | $ / shares	$ 59.89
Granted (in USD per share) | $ / shares	82.96
Vested (in USD per share) | $ / shares	62.09
Forfeited (in USD per share) | $ / shares	48.27
Weighted Average Grant Date Fair Value, Ending balance (in USD per share) | $ / shares	$ 73.95