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PROPERTY: (Tables)

12 Months Ended

Dec. 31, 2014

PROPERTY:

Schedule of major classes of property, plant and equipment

		As of December 31,
(in millions)		2014			2013
Buildings and equipment		$	9,173.7		$	8,107.2
Construction in progress		2,755.9			2,567.0
Mine development		255.0			250.7
Land, other than mineral		100.1			61.8
Total property		12,284.7			10,986.7
Accumulated depreciation, amortization and depletion		(4,848.3		)	(4,510.5		)
Total property, net		$	7,436.4		$	6,476.2

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph b

-Article 5

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