Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Net sales	[1]	$ 8,989.3	$ 8,383.3	$ 7,802.4
Cost of sales		(7,099.7)	(6,600.2)	(6,103.5)
Gross profit		1,889.6	1,783.1	1,698.9
Selling and administrative expenses		(634.2)	(610.3)	(580.9)
Other expense, net		148.4	71.5	42.9
Income from operations	[2]	1,107.0	1,101.3	1,075.1
Non-operating pension (expense) income		(0.1)	4.5	(7.7)
Interest expense, net		(79.1)	(41.4)	(53.3)
Income before taxes		1,027.8	1,064.4	1,014.1
Provision for income taxes		(253.7)	(259.3)	(248.9)
Net income		$ 774.1	$ 805.1	$ 765.2
Net income per common share:
Basic		$ 8.61	$ 8.97	$ 8.52
Diluted		8.58	8.93	8.48
Dividends declared per common share		$ 5	$ 5	$ 5
Statements of Comprehensive Income:
Net Income (Loss)		$ 774.1	$ 805.1	$ 765.2
Foreign currency translation adjustment		0.0	0.0	0.1
Changes in unrealized gains on marketable debt securities, net of tax of $0.0 million, ($0.1) million, and ($0.6) millionfor 2025, 2024, and 2023, respectively		0.1	0.3	1.8
Amortization of pension and postretirement plans actuarial loss and prior service cost, net of tax of ($1.3) million, ($1.4) million, and ($2.1) million for 2025, 2024, and 2023, respectively		3.8	4.1	6.4
Changes in unfunded employee benefit obligations, net of tax of $0.7 million, ($7.6) million, and ($7.8) million for 2025, 2024, and 2023, respectively		(2.1)	23.1	23.2
Other comprehensive income		1.8	27.5	31.5
Comprehensive income		$ 775.9	$ 832.6	$ 796.7

[1] Sales to foreign unaffiliated customers during the years ended December 31, 2025, 2024, and 2023 were $377.9 million, $445.8 million, and $402.6 million, respectively.

[2] The significant expense categories align with the segment-level information that is regularly provided to the CODM.