Stock Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended		3 Months Ended			6 Months Ended
	Apr. 30, 2022	Feb. 28, 2022	Apr. 30, 2022		Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021	Dec. 10, 2021
Accelerated Share Repurchases [Line Items]
Stock repurchase program authorized amount								$ 1,000,000
Remaining amount available for further repurchases	$ 500,000		$ 500,000			$ 500,000
Purchases of treasury stock (in shares)			984	[1]	756	1,685	1,593
Aggregate purchased shares			$ 290,000	[1]	$ 195,211	$ 535,000	$ 398,082
Accelerated Share Repurchase Program February 2022
Accelerated Share Repurchases [Line Items]
Stock repurchase program authorized amount		$ 200,000
Prepayment to repurchase stock		200,000
Initial share delivery		$ 160,000
Stock repurchase program, prepayment during prior period, future derivative settlement	$ 40,000
Purchases of treasury stock (in shares)	700
Purchases of treasury stock (in USD per share)	$ 305.36
Open Market Purchase
Accelerated Share Repurchases [Line Items]
Purchases of treasury stock (in shares)			200
Purchases of treasury stock (in USD per share)			$ 298.29
Aggregate purchased shares			$ 50,000

[1] Included the 161,215 shares and $40.0 million equity forward contract from the December 2021 ASR settled in February 2022.