Goodwill (Tables)

6 Months Ended

Jun. 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 acquired businesses		0		0		0		0			0
Total as of June 30, 2011		$3,005,383		$0		$91,633		$252,664			$3,349,680
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 June 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 June 30, 2011		$3,005,383		$0		$91,633		$0			$3,097,016