Environmental and Legal Contingencies (Tables)

9 Months Ended

Sep. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of accrual of liabilities related to environmental loss contingencies

Liabilities recorded on the Company’s Consolidated Balance Sheets for such estimated probable costs relating to environmental matters are presented below:

	September 30, 2012		December 31, 2011
Accrued liabilities	$	20.0	$	22.2
Other non-current liabilities	28.3		30.3

Schedule of information on pending asbestos cases

Information on asbestos cases pending at December 31, 2011 is presented below:

	December 31, 2011
Cases with specific dollar claims for damages:
Claims of less than $0.2	102
Claims of $0.2 to $5.0	6
Claims of $5.0 to $15.0	2
Claims of $15.0 to $20.0	2
Total claims with specific dollar claims for damages (a)	112
Cases without a specific dollar claim for damages	290
Total asbestos cases pending	402

(a) Involve a total of 2,471 plaintiffs and 15,805 defendants

Schedule of number of new asbestos claims filed, number of pending asbestos claims disposed, and amount paid in settlements

Set forth below is a chart showing the number of new claims filed (accounted for as described above), the number of pending claims disposed of (i.e., settled or otherwise dismissed), and the approximate net amount of dollars paid on behalf of AK Steel in settlement of asbestos-related claims in 2011 and 2010.

	Year Ended December 31,
	2011		2010
New Claims Filed	31		122
Pending Claims Disposed Of	44		179
Total Amount Paid in Settlements	$	0.7	$	0.8