PROPERTY: (Tables)

12 Months Ended

Dec. 31, 2013

Schedule of major classes of property, plant and equipment

	As of December 31,
(in millions)	2013			2012
Buildings and equipment	$	8,107.2		$	7,497.3
Construction in progress	2,567.0			1,617.6
Mine development	250.7			250.7
Land, other than mineral	61.8			46.7
Total property	10,986.7			9,412.3
Accumulated depreciation, amortization and depletion	(4,510.5		)	(4,255.6		)
Total property, net	$	6,476.2		$	5,156.7

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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