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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 484.5	$ 471.8	$ 921.0	$ 902.2
Cost of sales	375.0	300.0	702.2	555.6
Gross margin	109.5	171.8	218.8	346.6
Selling, general and administrative expense	57.9	58.0	115.6	116.4
Other operating income (expense):
Currency transactions, net	(1.1)	9.8	(0.2)	4.8
Other operating expense, net	(4.0)	(3.7)	(7.5)	(7.6)
Income from operations	46.5	119.9	95.5	227.4
Other income (expense):
Interest and dividend income	1.7	1.2	3.8	2.2
Marketable equity securities	1.2	(2.2)	1.8	(2.4)
Other components of net periodic pension and OPEB cost	(3.8)	(3.8)	(7.6)	(7.6)
Interest expense	(4.7)	(5.0)	(9.5)	(9.8)
Income before income taxes	40.9	110.1	84.0	209.8
Income tax expense	11.4	32.4	24.2	61.4
Net income	$ 29.5	$ 77.7	$ 59.8	$ 148.4
Net income per basic and diluted share	$ 0.25	$ 0.67	$ 0.52	$ 1.28
Weighted average shares used in the calculation of net income per share	115.9	115.9	115.9	115.9

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