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STATEMENTS OF CONSOLIDATED INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Income Statement [Abstract] |  |
Net sales | $ 737.5 | $ 807.6
Costs and expenses: |  |
Cost of products sold, excluding depreciation and amortization | 642.9 | 731.1
Depreciation and amortization | 28.8 | 26.3
Selling, general, administrative, research and development | 32.6 | 29.7
Restructuring costs | 0.1 | 1.4
Other operating charges, net | 0.4 |
Total costs and expenses | 704.8 | 788.5
Operating income | 32.7 | 19.1
Other (expense) income: |  |
Interest expense | (11.5) | (11.9)
Other income, net - Note 9 | 10.9 | 13.6
Income before income taxes | 32.1 | 20.8
Income tax provision | (7.5) | (4.9)
Net income | $ 24.6 | $ 15.9
Net income per common share: |  |
Basic | $ 1.53 | $ 1
Diluted | $ 1.51 | $ 0.99
Weighted-average number of common shares outstanding (in thousands): |  |
Basic | 16,027 | 15,940
Diluted | 16,230 | 16,096

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