GOODWILL (Tables)

9 Months Ended

Sep. 30, 2017

GOODWILL [Abstract]

Changes in Carrying Amount of Goodwill by Reportable Segment

in thousands	Aggregates	Asphalt	Concrete	Calcium	Total
Goodwill
Total as of December 31, 2016	$  3,003,191	$     91,633	$              0	$              0	$    3,094,824
Goodwill of acquired businesses 1	6,513	0	0	0	6,513
Goodwill of divested businesses	0	0	0	0	0
Total as of September 30, 2017	$  3,009,704	$     91,633	$              0	$              0	$    3,101,337

1 See Note 16 for a summary of the current year acquisitions.