Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property Plant And Equipment

Property, plant and equipment consist of the following:

	December 31,
(in millions)	2015		2014
Land	$	222.3	$	233.7
Mineral properties and rights	3,329.7		3,515.5
Buildings and leasehold improvements	2,100.5		2,242.0
Machinery and equipment	6,632.7		6,660.6
Construction in-progress	1,474.7		1,295.5
	13,759.9		13,947.3
Less: accumulated depreciation and depletion	5,038.9		4,633.4
	$	8,721.0	$	9,313.9