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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Jul. 31, 2024	Jul. 31, 2023
Class of Stock [Line Items]
Payments for repurchase of common stock	$ 88.3			$ 97.8			$ 369.3	$ 344.4
Quarterly cash dividend paid	$ 0.25	$ 0.24	$ 0.24	$ 0.24	$ 0.2	$ 0.2
Dividends paid on common stock	$ 182.6			$ 160.9			$ 182.6	$ 160.9
Stock Repurchase Program [Member]
Class of Stock [Line Items]
Repurchase of common stock , shares	1.2			1.7			5.7	6.0
Payments for repurchase of common stock	$ 88.3			$ 97.8			$ 369.3	$ 344.4
Maximum [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount									$ 1,000.0	$ 1,000.0

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