Pension ((Benefit)) (Details) - Pension Plan - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
U.S. Plan | Qualified Plan
Defined Benefit Plan, Net Periodic Benefit Cost
Service Cost	$ 11,500,000	$ 11,100,000	$ 34,500,000	$ 37,500,000
Interest Cost	13,500,000	12,500,000	40,500,000	33,100,000
Expected Return on Plan Assets	(25,300,000)	(21,900,000)	(75,900,000)	(62,300,000)
Amortization
Actuarial Loss (Gain)	400,000	0	1,200,000	11,400,000
Prior Service Cost (Credit)	0	0	0	(100,000)
Total Pension (Benefit) Expense	100,000	1,700,000	300,000	19,600,000
Settlement Expense	0	17,000,000.0	0	37,300,000
Total Pension (Benefit) Expense	100,000	18,700,000	300,000	56,900,000
Contribution to pension plan			0	0
U.S. Plan | Non-Qualified Plan
Defined Benefit Plan, Net Periodic Benefit Cost
Service Cost	1,200,000	1,400,000	3,600,000	4,200,000
Interest Cost	1,300,000	1,000,000.0	3,900,000	3,000,000.0
Amortization
Actuarial Loss (Gain)	1,300,000	1,800,000	3,900,000	5,400,000
Total Pension (Benefit) Expense	3,800,000	4,200,000	11,400,000	12,600,000
Contribution to pension plan			16,500,000	20,700,000
Non-U.S. Plan
Defined Benefit Plan, Net Periodic Benefit Cost
Service Cost	400,000	400,000	1,100,000	1,300,000
Interest Cost	1,200,000	600,000	3,600,000	1,900,000
Expected Return on Plan Assets	(1,600,000)	(700,000)	(4,700,000)	(2,200,000)
Amortization
Actuarial Loss (Gain)	(100,000)	200,000	(300,000)	600,000
Total Pension (Benefit) Expense	(100,000)	500,000	(300,000)	1,600,000
Settlement Expense	0	0	0	700,000
Total Pension (Benefit) Expense	$ (100,000)	$ 500,000	$ (300,000)	$ 2,300,000