Employee Benefits - Change In Plan Assets (Detail) - Pension Plans, Defined Benefit - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	$ 1,176.8
Employer Contributions	16.5	$ 20.7
Fair Value at end of year	1,200.8	1,176.8
U.S.
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	1,176.8	1,708.9
Actual Return on Assets	86.8	(395.4)
Employer Contributions	0.0	0.0
Employee Contributions	0.0	0.0
Settlements	0.0	(125.0)
Benefits Paid	(62.8)	(11.7)
Foreign Exchange Rate Changes	0.0	0.0
Fair Value at end of year	1,200.8	1,176.8
Non U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	134.5	198.7
Actual Return on Assets	5.0	(46.9)
Employer Contributions	3.9	3.6
Employee Contributions	0.8	0.7
Settlements	0.0	(0.9)
Benefits Paid	(4.1)	(4.6)
Foreign Exchange Rate Changes	8.6	(16.1)
Fair Value at end of year	$ 148.7	$ 134.5