Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net sales	$ 2,828.0	$ 2,733.9	$ 2,233.4
Operating costs and expenses:
Cost of sales	2,084.0	1,998.1	1,829.1
Gross Profit	744.0	735.8	404.3
Selling and administrative	209.3	191.3	185.1
(Gain) loss on sale or impairment of long lived assets, net	10.8	6.8	(8.4)
Other operating credits and charges, net	(2.2)	4.9	17.4
Income from operations	526.1	532.8	210.2
Non-operating income (expense):
Interest expense, net of capitalized interest	(15.8)	(19.3)	(32.1)
Investment income	17.6	10.5	8.2
Other nonoperating items	(3.9)	(13.8)	(21.4)
Total non-operating income (expense)	(2.1)	(22.6)	(45.3)
Income from continuing operations before income taxes and equity in (income) loss of unconsolidated affiliates	524.0	510.2	164.9
Provision for income taxes	122.3	119.1	19.8
Equity in (income) loss of unconsolidated affiliates	2.9	0.0	(5.2)
Income from continuing operations	398.8	391.1	150.3
Loss from discontinued operations before taxes	(5.6)	(2.0)	(0.8)
Benefit for income taxes	(1.4)	(0.7)	(0.3)
Loss from discontinued operations	(4.2)	(1.3)	(0.5)
Net income	$ 394.6	$ 389.8	$ 149.8
Basic net income (loss) per share:
Income per share from continuing operations	$ 2.79	$ 2.71	$ 1.05
Loss per share from discontinued operations	(0.03)	(0.01)	(0.01)
Net income per share	2.76	2.70	1.04
Diluted net earnings (loss) per share:
Income per share from continuing operations	2.76	2.67	1.03
Loss per share from discontinued operations	(0.03)	(0.01)	0.00
Net income per share	$ 2.73	$ 2.66	$ 1.03
Weighted average number of shares outstanding - basic	143.0	144.4	143.4
Weighted average number of shares outstanding, diluted	144.4	146.4	145.3