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Share Repurchase Program (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	May 18, 2023
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase program, authorized remaining amount	$ 300,000,476		$ 300,000,476
Common stock repurchase program, number of shares repurchased (in shares)	835,188	0	1,022,545	1,633,620
Repurchase program, approximate dollar value of shares purchased	$ 165,020,000		$ 200,020,000	$ 217,108,000
Repurchase program, average price paid per share (in usd per share)	$ 197.58		$ 195.61	$ 132.90
May 18 2023 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase program, authorized amount					$ 300,000,000
September 19, 2022 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchase program, authorized remaining amount					$ 100,000,000

X

- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481520/505-30-50-4

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Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

+ References

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Total cost of shares repurchased divided by the total number of shares repurchased.

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