Goodwill (Tables)

9 Months Ended

Sep. 30, 2011

Goodwill [Abstract]

Changes in the carrying amount of goodwill by reportable segment

GOODWILL
in thousands	Aggregates			Concrete		Asphalt Mix		Cement			Total
Gross Carrying Amount
Total as of December 31, 2010		$3,005,383			$0		$91,633		$252,664			$3,349,680
Goodwill of divested businesses		(10,300	)		0		0		0			(10,300	)
Total as of September 30, 2011		$2,995,083			$0		$91,633		$252,664			$3,339,380
Accumulated Impairment Losses
Total as of December 31, 2010		$0			$0		$0		($252,664	)		($252,664	)
Goodwill impairment loss		0			0		0		0			0
Total as of September 30, 2011		$0			$0		$0		($252,664	)		($252,664	)
Goodwill, net of Accumulated Impairment Losses
Total as of December 31, 2010		$3,005,383			$0		$91,633		$0			$3,097,016
Total as of September 30, 2011		$2,995,083			$0		$91,633		$0			$3,086,716

1 The goodwill of divested businesses relates to the 2011 divestiture as discussed in Note 14.