Employee Benefits - Change In Plan Assets (Detail) - Pension Plans - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	$ 1,200.8	$ 1,200.8
Employer Contributions		8.0	$ 16.5
Fair Value at end of year		1,338.1	1,200.8
U.S.
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	1,200.8	1,200.8	1,176.8
Actual Return on Assets		(1.7)	86.8
Employer Contributions	200.0	200.0	0.0
Employee Contributions		0.0	0.0
Settlements		0.0	0.0
Benefits Paid		(61.0)	(62.8)
Foreign Exchange Rate Changes		0.0	0.0
Fair Value at end of year		1,338.1	1,200.8
Non U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	$ 148.7	148.7	134.5
Actual Return on Assets		(1.2)	5.0
Employer Contributions		4.0	3.9
Employee Contributions		0.8	0.8
Settlements		(1.7)	0.0
Benefits Paid		(4.3)	(4.1)
Foreign Exchange Rate Changes		(6.5)	8.6
Fair Value at end of year		$ 139.8	$ 148.7