CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net sales	$ 1,746.6	$ 1,557.2	$ 3,405.5	$ 3,090.6
Cost of products sold (exclusive of item shown separately below)	1,512.7	1,320.0	2,976.4	2,596.9
Selling and administrative expenses	79.5	65.6	156.2	137.3
Depreciation	54.9	55.1	109.8	110.2
Total operating costs	1,647.1	1,440.7	3,242.4	2,844.4
Operating profit	99.5	116.5	163.1	246.2
Interest expense	37.9	38.2	75.5	77.6
Pension and OPEB (income) expense	(10.0)	(18.1)	(20.0)	(36.2)
Other (income) expense	(0.2)	3.6	(4.1)	11.4
Income before income taxes	71.8	92.8	111.7	193.4
Income tax expense (benefit)	(0.5)	0.4	(5.4)	0.4
Net income	72.3	92.4	117.1	193.0
Less: Net income attributable to noncontrolling interests	15.7	15.2	31.8	31.4
Net income attributable to AK Steel Holding Corporation	$ 56.6	$ 77.2	$ 85.3	$ 161.6
Net income per share attributable to AK Steel Holding Corporation common stockholders:
Basic	$ 0.18	$ 0.25	$ 0.27	$ 0.51
Diluted	$ 0.18	$ 0.24	$ 0.27	$ 0.50