Employee Benefits - Amounts Included in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Supplemental Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Actuarial Loss	$ 59.2	$ 86.6
Prior Service (Credit) Cost	0.0	0.0
Gross Amount in Accumulated Other Comprehensive Income	59.2	86.6
Income Tax Effect	14.8	21.7
Net Amount in Accumulated Other Comprehensive Income	44.4	64.9
U.S. | Pension Plans, Defined Benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Actuarial Loss	418.3	273.8
Prior Service (Credit) Cost	0.0	(0.1)
Gross Amount in Accumulated Other Comprehensive Income	418.3	273.7
Income Tax Effect	105.1	68.7
Net Amount in Accumulated Other Comprehensive Income	313.2	205.0
Non U.S. Plans | Pension Plans, Defined Benefit
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Actuarial Loss	24.3	40.4
Prior Service (Credit) Cost	0.2	0.6
Gross Amount in Accumulated Other Comprehensive Income	24.5	41.0
Income Tax Effect	4.9	5.2
Net Amount in Accumulated Other Comprehensive Income	$ 19.6	$ 35.8