Employee Benefit Plans Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Pension Plan | UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans
Current Pension Liability	$ 9.1	$ 8.8
Noncurrent Pension Liability	270.3	268.4
Funded Status of Plan	279.4	277.2
Net Actuarial Gain (Loss) in Balance Sheet	(510.2)	(517.8)
Prior Service Credit in Balance Sheet	(0.6)	(0.6)
Pension Recognized in Balance Sheet, Gross of Deferred Tax	(510.8)	(518.4)
Pension Deferred Tax Asset in Balance Sheet	211.2	213.5
Pension Recognized in Balance Sheet, Net of Deferred Tax	(299.6)	(304.9)	$ (383.2)
Pension Plan | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Current Pension Liability	0.0	0.0
Noncurrent Pension Liability	26.9	17.4
Funded Status of Plan	26.9	17.4
Net Actuarial Gain (Loss) in Balance Sheet	(95.0)	(83.7)
Prior Service Credit in Balance Sheet	(0.2)	(0.2)
Pension Recognized in Balance Sheet, Gross of Deferred Tax	(95.2)	(83.9)
Pension Deferred Tax Asset in Balance Sheet	22.2	19.5
Pension Recognized in Balance Sheet, Net of Deferred Tax	(73.0)	(64.4)	(34.0)
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Current Pension Liability	0.7	1.1
Noncurrent Pension Liability	70.1	74.3
Funded Status of Plan	70.8	75.4
Net Actuarial Gain (Loss) in Balance Sheet	21.2	31.6
Prior Service Credit in Balance Sheet	2.3	2.5
Pension Recognized in Balance Sheet, Gross of Deferred Tax	23.5	34.1
Pension Deferred Tax Asset in Balance Sheet	3.4	1.1
Pension Recognized in Balance Sheet, Net of Deferred Tax	$ 26.9	$ 35.2	$ 21.2