GOODWILL (Tables)

9 Months Ended

Sep. 30, 2019

GOODWILL [Abstract]

Changes in Carrying Amount of Goodwill by Reportable Segment

in thousands	Aggregates	Asphalt	Concrete	Calcium	Total
Goodwill
Total as of December 31, 2018	$    3,073,763	$     91,633	$              0	$              0	$    3,165,396
Goodwill of acquired businesses 1	1,665	0	0	0	1,665
Total as of September 30, 2019	$    3,075,428	$     91,633	$              0	$              0	$    3,167,061

¹ See Note 16 for a summary of prior year acquisitions.