Employee Benefit Plans Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan | UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans
Service Cost	$ 9.2	$ 7.7	$ 9.6
Interest Cost	87.9	67.2	65.0
Expected Return on Plan Assets	(92.0)	(105.9)	(100.6)
Amortization of Net Actuarial Loss (Gain)	15.2	16.3	21.3
Amortization of Prior Service Cost (Credit)	0.0	0.0	0.0
Net Periodic Benefit Cost	20.3	(14.7)	(4.7)
Pension Plan | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Service Cost	0.0	0.0	0.0
Interest Cost	7.7	5.0	4.2
Expected Return on Plan Assets	(8.5)	(10.9)	(9.8)
Amortization of Net Actuarial Loss (Gain)	2.5	0.4	1.3
Amortization of Prior Service Cost (Credit)	0.0	0.0	0.0
Net Periodic Benefit Cost	1.7	(5.5)	(4.3)
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service Cost	0.0	0.0	0.0
Interest Cost	4.5	3.0	3.0
Expected Return on Plan Assets	(0.5)	(0.5)	(0.5)
Amortization of Net Actuarial Loss (Gain)	(10.5)	(1.0)	0.0
Amortization of Prior Service Cost (Credit)	(0.2)	(0.2)	(0.2)
Net Periodic Benefit Cost	$ (6.7)	$ 1.3	$ 2.3