Environmental and Legal Contingencies (Tables)

3 Months Ended

Mar. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of Accrual of Liabilities Related to Environmental Loss Contingencies

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

	March 31, 2014		December 31, 2013
Accrued liabilities	$	8.7	$	9.5
Other non-current liabilities	34.5		34.1

Schedule of Information on Pending Asbestos Cases

Information on asbestos cases pending at March 31, 2014 is presented below:

	Asbestos Cases Pending at
	March 31, 2014
Cases with specific dollar claims for damages:
Claims up to $0.2	121
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)	131
Cases without a specific dollar claim for damages	304
Total asbestos cases pending	435

(a) Involve a total of 2,339 plaintiffs and 17,487 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 the three months endedMarch 31, 2014 and 2013.

	Three Months Ended March 31,
	2014		2013
New Claims Filed	13		11
Pending Claims Disposed Of	14		20
Total Amount Paid in Settlements	$	0.3	$	0.7