Income Taxes - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Tax Credit Carryforward [Line Items]
Provision for income taxes	$ 628.4	$ 357.5	$ 430.3
Effective income tax rate reconciliation, percent	23.60%	24.40%	24.40%
Unrecognized tax benefit	$ 58.5	$ 60.7	$ 40.7	$ 25.3
Increase in net income from recognition of unrecognized tax benefits	51.9	54.4
Interest and penalties expense (benefit)	(4.7)	0.2	$ 11.1
Income tax examination, penalties and interest accrued	16.0	22.7
Valuation allowance	157.9	121.2
Foreign Tax Jurisdiction
Tax Credit Carryforward [Line Items]
Valuation allowance	157.5	120.7
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Valuation allowance	0.4	0.4
Net operating loss carryforwards	$ 0.4	$ 0.4