CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 5,933.7	$ 6,468.0	$ 5,968.3
Cost of products sold (exclusive of items shown below)	5,539.1	6,036.8	5,643.2
Selling and administrative expenses (exclusive of items shown below)	208.7	215.4	204.0
Depreciation	192.0	185.0	197.1
Pension and OPEB expense (income) (exclusive of corridor charge shown below)	(35.3)	(36.0)	(14.9)
Pension corridor charges	157.3	268.1	0
Other operating items:
Ashland coke plant shutdown charges	0	0	63.7
Butler retiree benefit settlement costs	0	0	9.1
Total operating costs	6,061.8	6,669.3	6,102.2
Operating profit (loss)	(128.1)	(201.3)	(133.9)
Interest expense	86.7	47.5	33.0
Other income (expense)	6.2	(5.3)	(7.6)
Income (loss) before income taxes	(208.6)	(254.1)	(174.5)
Income tax provision due to tax law changes	0	2.0	25.3
Income tax provision (benefit)	790.0	(96.0)	(69.1)
Total income tax provision (benefit)	790.0	(94.0)	(43.8)
Net income (loss)	(998.6)	(160.1)	(130.7)
Less: Net income (loss) attributable to noncontrolling interests	28.7	(4.5)	(1.8)
Net income (loss) attributable to AK Steel Holding Corporation	$ (1,027.3)	$ (155.6)	$ (128.9)
Basic and diluted earnings per share:
Net income (loss) attributable to AK Steel Holding Corporation common stockholders (in dollars per share)	$ (9.06)	$ (1.41)	$ (1.17)