Reportable Business Segments (Net Sales and Segment Profit (Loss) and Reconciliation to Income from Continuing Operations) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Profit (Loss)
Total segment profit	$ 1,036,300,000	$ 857,100,000	$ 665,800,000
Reconciliation to Operating income:
Gain (Loss) on Disposition of Business and Related Property	1,500,000	(14,100,000)	0
Impairment charges	0	63,200,000	0
Items in (Gains) Losses and other expenses, net that are excluded from segment profit (loss)	0	14,800,000	8,100,000
Restructuring charges	0	3,100,000	1,500,000
Operating income	1,034,800,000	790,100,000	656,200,000
Pension settlements	400,000	800,000	(200,000)
Interest Expense, Operating and Nonoperating	38,700,000	51,700,000	38,700,000
Other Nonoperating Income (Expense)	1,900,000	100,000	1,900,000
Income before income taxes	$ 993,800,000	$ 737,500,000	$ 615,800,000