Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2443-110228

Name:	us-gaap_GainLossOnDispositionOfAssets1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

UNAUDITED SUPPLEMENTARY DATA (Additional Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014
Significant Acquisitions And Disposals [Line Items]
Gain on sale of properties and businesses	$ 244,222us-gaap_GainLossOnDispositionOfAssets1	$ 39,250us-gaap_GainLossOnDispositionOfAssets1	$ 68,455us-gaap_GainLossOnDispositionOfAssets1
Cement And Concrete [Member]
Significant Acquisitions And Disposals [Line Items]
Gain on sale of properties and businesses				$ 227,910