CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net sales	$ 2,066.7	$ 2,063.0	$ 6,078.4	$ 6,160.8
Cost of sales	1,788.0	1,784.5	5,358.3	5,182.6
Gross income	278.7	278.5	720.1	978.2
Operating expenses:
Selling, general and administrative	166.3	171.5	503.4	521.1
Amortization of purchased intangibles	3.0	2.8	8.6	8.3
Intangible asset impairment charge	2.1		2.1
Total operating expenses	171.4	174.3	514.1	529.4
Operating income	107.3	104.2	206.0	448.8
Other income (expense):
Interest expense	(13.4)	(12.2)	(39.2)	(36.2)
Interest income	2.5	1.8	4.8	2.9
Miscellaneous, net	(6.8)	(4.1)	(20.8)	(0.6)
Income before income taxes and earnings (losses) of unconsolidated affiliates	89.6	89.7	150.8	414.9
Provision for income taxes	29.9	0.7	63.8	12.0
Income before earnings (losses) of unconsolidated affiliates	59.7	89.0	87.0	402.9
Equity in earnings (losses) of unconsolidated affiliates	(0.4)	0.7	(2.9)	0.3
Net income	$ 59.3	$ 89.7	$ 84.1	$ 403.2
Earnings per share:
Basic	$ 0.91	$ 1.31	$ 1.28	$ 5.88
Diluted	0.90	1.30	1.27	5.82
Cash dividends declared per share on Common Stock	$ 0.37	$ 0.33	$ 1.11	$ 0.99