CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Net sales	$ 2,732.1	$ 2,846.9	$ 5,044.9	$ 5,390.7
Cost of sales	2,207.6	2,300.8	4,120.5	4,374.6
Gross income	524.5	546.1	924.4	1,016.1
Operating expenses:
Selling, general and administrative	213.3	220.0	424.3	416.8
Amortization of purchased intangibles	13.8	13.6	27.3	27.1
Intangible asset impairments	5.7	51.6	5.7	51.6
Total operating expenses	232.8	285.2	457.3	495.5
Operating income	291.7	260.9	467.1	520.6
Other income (expense):
Interest expense	(30.1)	(32.0)	(57.1)	(54.4)
Interest income	2.0	1.7	4.0	3.3
Miscellaneous, net	7.3	(1.5)	7.8	(3.5)
Income before income taxes and losses of unconsolidated affiliates	270.9	229.1	421.8	466.0
Provision for income taxes	65.2	53.5	102.0	108.2
Income before losses of unconsolidated affiliates	205.7	175.6	319.8	357.8
Losses of unconsolidated affiliates	(0.9)	(7.0)	(2.8)	(9.8)
Net income	$ 204.8	$ 168.6	$ 317.0	$ 348.0
Earnings per share:
Basic	$ 3.17	$ 2.57	$ 4.9	$ 5.3
Diluted	3.16	2.56	4.88	5.27
Cash dividends declared per share on Common Stock	$ 0.51	$ 0.46	$ 1.02	$ 0.92