Leases Leases (Tables)

12 Months Ended

Dec. 31, 2014

Operating Leased Assets [Line Items]

Leases And Royalty Future Minimum Payments [Table Text Block]

Future minimum lease and royalty payments as of December 31, 2014 are as follows:

	Capital Leases		Operating Leases		Coal Lease and Royalty Obligations
Year Ending December 31,
	(Dollars in millions)
2015	$	9.5	$	207.2	$	284.6
2016	6.9		196.0		253.3
2017	1.4		178.9		22.3
2018	0.5		104.3		20.5
2019	0.5		51.3		18.2
2020 and thereafter	10.6		64.3		29.0
Total minimum lease payments	29.4		$	802.0	$	627.9
Less interest	7.2
Present value of minimum capital lease payments	$	22.2