Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net sales	$ 736.8	$ 718.3	$ 2,238.9	$ 2,023.3
Cost of sales	524.0	507.7	1,588.7	1,502.3
Gross Profit	212.8	210.6	650.2	521.0
Selling, general and administrative expenses	51.2	49.3	151.9	145.3
(Gain) loss on sale or impairment of long lived assets, net	0.3	0.7	(0.3)	(1.8)
Other Operating Charges And Credits, Net	(6.3)	(0.9)	(11.2)	4.5
Income from operations	167.6	161.5	509.8	373.0
Non-operating income (expense):
Interest expense, net of capitalized interest	(3.9)	(4.9)	(12.7)	(14.8)
Investment income	5.5	2.9	13.5	7.2
Other non-operating items	(2.2)	(2.2)	(4.3)	(7.2)
Total non-operating income (expense)	(0.6)	(4.2)	(3.5)	(14.8)
Income from continuing operations before taxes and equity in loss of unconsolidated affiliate	167.0	157.3	506.3	358.2
Provision for income taxes	41.8	46.4	122.7	97.9
Equity in loss of unconsolidated affiliate	1.1	0.0	1.7	0.0
Income from continuing operations	124.1	110.9	381.9	260.3
Loss from discontinued operations before taxes	(0.1)	(1.7)	(5.7)	(1.7)
Benefit for income taxes	0.0	(0.6)	(1.4)	(0.6)
Loss from discontinued operations	(0.1)	(1.1)	(4.3)	(1.1)
Net income	$ 124.0	$ 109.8	$ 377.6	$ 259.2
Net income per share of common stock:
Income per share continuing operations	$ 0.87	$ 0.77	$ 2.65	$ 1.80
Loss per share discontinued operations	0.00	0.0	(0.03)	0.0
Net income per share - basic	0.87	0.76	2.62	1.79
Diluted net income per share of common stock
Income per share continuing operations	0.86	0.76	2.62	1.78
Loss per share discontinued operations	0.00	(0.01)	(0.03)	(0.01)
Net income per share - diluted	$ 0.86	$ 0.75	$ 2.59	$ 1.77
Weighted average shares of stock outstanding - basic	142.5	144.5	143.9	144.4
Weighted average shares of stock outstanding - diluted	143.9	146.5	145.6	146.3