Property, Plant, Equipment and Mine Development (Tables)

9 Months Ended

Sep. 30, 2015

Property, Plant, Equipment and Mine Development, Net [Line Items]

Property, Plant and Equipment [Table Text Block]

Property, plant, equipment and mine development, net, as of September 30, 2015 and December 31, 2014 consisted of the following:

	September 30, 2015			December 31, 2014
	(Dollars in millions)
Land and coal interests	$	10,637.5		$	11,021.1
Buildings and improvements	1,536.9			1,569.1
Machinery and equipment	2,341.9			2,685.7
Less: Accumulated depreciation, depletion and amortization	(5,040.9		)	(4,698.6		)
Total, net	$	9,475.4		$	10,577.3