Environmental and Legal Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of environmental-related capital investments and compliance costs

Over the past three years, the Company has expended the following for environmental-related capital investments and environmental compliance:

	2012		2011		2010
Environmental-related capital investments	$	1.0	$	1.7	$	4.5
Environmental compliance costs	101.6		106.4		118.7

Schedule of accrual of liabilities related to environmental loss contingencies

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

	2012		2011
Accrued liabilities	$	19.6	$	22.2
Other non-current liabilities	27.4		30.3

Schedule of information on pending asbestos cases

Information on asbestos cases pending at December 31, 2012, is presented below:

	Asbestos Cases Pending at
	December 31, 2012
Cases with specific dollar claims for damages:
Claims up to $0.2		116
Claims above $0.2 to $5.0		6
Claims above $5.0 to $15.0		2
Claims above $15.0 to $20.0		2
Total claims with specific dollar claims for damages (a)		126
Cases without a specific dollar claim for damages		307
Total asbestos cases pending		433

(a) Involve a total of 2,485 plaintiffs and 17,550 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 2012, 2011 and 2010.

	2012		2011		2010
New Claims Filed	50		31		122
Pending Claims Disposed Of	24		44		179
Total Amount Paid in Settlements	$	0.8	$	0.7	$	0.8