CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 1,404.5	$ 1,538.4	$ 2,774.3	$ 3,047.1
Cost of products sold (exclusive of items shown separately below)	1,309.2	1,392.4	2,561.5	2,801.4
Selling and administrative expenses (exclusive of items shown separately below)	50.2	50.8	101.8	106.6
Depreciation	47.9	48.4	96.5	96.7
Pension and OPEB expense (income)	(16.5)	(9.9)	(32.4)	(18.4)
Total operating costs	1,390.8	1,481.7	2,727.4	2,986.3
Operating profit	13.7	56.7	46.9	60.8
Interest expense	32.0	21.8	63.0	38.0
Other income (expense)	2.5	(4.7)	4.3	(3.8)
Income (loss) before income taxes	(15.8)	30.2	(11.8)	19.0
Income tax provision	9.7	747.8	6.9	743.5
Net income (loss)	(25.5)	(717.6)	(18.7)	(724.5)
Less: Net income attributable to noncontrolling interests	14.9	6.6	31.6	11.5
Net income (loss) attributable to AK Steel Holding Corporation	$ (40.4)	$ (724.2)	$ (50.3)	$ (736.0)
Basic and diluted earnings per share:
Net income (loss) attributable to AK Steel Holding Corporation common stockholders (in dollars per share)	$ (0.30)	$ (6.55)	$ (0.37)	$ (6.66)
Dividends declared and paid per share (in dollars per share)	$ 0.00	$ 0.05	$ 0.00	$ 0.10