Stock-based compensation - Summarized Activity Related to Restricted Stock (Detail) - Restricted Stock shares in Thousands	3 Months Ended
	Jan. 31, 2023 $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	6
Vested (in shares) | shares	(3)
Ending balance (in shares) | shares	3
Weighted-Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 167.99
Vested (in dollars per share) | $ / shares	165.21
Ending balance (in dollars per share) | $ / shares	$ 170.56