CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net sales	$ 1,557.2	$ 1,492.2	$ 3,090.6	$ 3,011.0
Cost of products sold (exclusive of items shown separately below)	1,343.7	1,325.0	2,654.5	2,690.5
Selling and administrative expenses (exclusive of items shown separately below)	65.1	62.2	136.3	125.7
Depreciation	55.1	54.3	110.2	108.0
Pension and OPEB expense (income)	(16.2)	(11.9)	(32.4)	(23.8)
Total operating costs	1,447.7	1,429.6	2,868.6	2,900.4
Operating profit	109.5	62.6	222.0	110.6
Interest expense	38.2	41.4	77.6	84.2
Other income (expense)	(3.6)	2.1	(11.4)	1.4
Income before income taxes	67.7	23.3	133.0	27.8
Income tax expense (benefit)	(8.7)	(10.6)	(22.1)	(10.5)
Net income (loss)	76.4	33.9	155.1	38.3
Less: Net income attributable to noncontrolling interests	15.2	16.6	31.4	34.6
Net income (loss) attributable to AK Steel Holding Corporation	$ 61.2	$ 17.3	$ 123.7	$ 3.7
Net income (loss) per share attributable to AK Steel Holding Corporation common stockholders:
Basic	$ 0.19	$ 0.08	$ 0.39	$ 0.02
Diluted	$ 0.19	$ 0.08	$ 0.38	$ 0.02