Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Decrease in unrecognized tax benefits within the next twelve months	$ 130.0		$ 130.0
Increase in unrecognized tax benefits within the next twelve months	20.0		20.0
Amount of potential additional income tax expense related to an IRS notice of proposed adjustment subject to interest and penalties.	$ 370.0		$ 370.0
Effective tax rate	(9.30%)	14.80%	11.90%	14.20%
Tax benefit related to Swiss Agreement	$ (16.6)	$ 28.3	$ 56.9	$ 82.7
U.S. corporate income tax rate			21.00%
Tax Reform and AHV Financing [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Tax benefit related to Swiss Agreement	(59.0)
Tax benefit associated with closing certain tax years	$ 22.0