CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net sales	$ 1,533.4	$ 1,518.8
Cost of products sold (exclusive of items shown separately below)	1,310.8	1,365.5
Selling and administrative expenses (exclusive of items shown separately below)	71.2	63.5
Depreciation	55.1	53.7
Pension and OPEB expense (income)	(16.2)	(11.9)
Total operating costs	1,420.9	1,470.8
Operating profit	112.5	48.0
Interest expense	39.4	42.8
Other income (expense)	(7.8)	(0.7)
Income before income taxes	65.3	4.5
Income tax expense (benefit)	(13.4)	0.1
Net income (loss)	78.7	4.4
Less: Net income attributable to noncontrolling interests	16.2	18.0
Net income (loss) attributable to AK Steel Holding Corporation	$ 62.5	$ (13.6)
Net income (loss) per share attributable to AK Steel Holding Corporation common stockholders:
Basic	$ 0.20	$ (0.08)
Diluted	$ 0.19	$ (0.08)