GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Goodwill by Reportable Segment

The goodwill balance was as follows:

($ in millions)	June 30, 2020		December 31, 2019
Goodwill, gross	$	245.3	$	245.3
Accumulated impairment	(5.8)		(5.8)
Goodwill, net	$	239.5	$	239.5

Goodwill by reportable segment was as follows:

($ in millions)	June 30, 2020		December 31, 2019
Ready-mixed concrete	$	150.0	$	150.0
Aggregate products	86.2		86.2
Other non-reportable segments	3.3		3.3
Goodwill, net	$	239.5	$	239.5

Schedule of Purchased Finite-Lived Intangible Assets

	June 30, 2020
($ in millions)	Gross		Accumulated Amortization		Net		Weighted Average Remaining Life (In Years)
Definite-lived intangible assets
Customer relationships	$	108.5	$	(67.4)	$	41.1	3.5
Trade names	44.5		(14.5)		30.0		18.7
Non-competes	18.3		(16.1)		2.2		2.2
Leasehold interests	12.5		(7.6)		4.9		5.2
Environmental credits	2.8		(0.3)		2.5		15.5
Total definite-lived intangible assets	186.6		(105.9)		80.7		9.6
Indefinite-lived intangible assets
Land rights(1)	1.2		—		1.2
Total purchased intangible assets	$	187.8	$	(105.9)	$	81.9

	December 31, 2019
($ in millions)	Gross		Accumulated Amortization		Net		Weighted Average Remaining Life (In Years)
Definite-lived intangible assets
Customer relationships	$	108.5	$	(59.7)	$	48.8	3.9
Trade names	44.5		(13.6)		30.9		19.1
Non-competes	18.3		(15.3)		3.0		2.4
Leasehold interests	12.5		(6.7)		5.8		5.4
Favorable contracts	4.0		(3.9)		0.1		0.9
Environmental credits	2.8		(0.2)		2.6		16.0
Total definite-lived intangible assets	190.6		(99.4)		91.2		9.4
Indefinite-lived intangible assets
Land rights(1)	1.2		—		1.2
Total purchased intangible assets	$	191.8	$	(99.4)	$	92.4

(1) Land rights will be reclassified to property, plant, and equipment upon the division of certain shared properties and settlement of the associated deferred payment.

Schedule of Purchased Indefinite-Lived Intangible Assets

	June 30, 2020
($ in millions)	Gross		Accumulated Amortization		Net		Weighted Average Remaining Life (In Years)
Definite-lived intangible assets
Customer relationships	$	108.5	$	(67.4)	$	41.1	3.5
Trade names	44.5		(14.5)		30.0		18.7
Non-competes	18.3		(16.1)		2.2		2.2
Leasehold interests	12.5		(7.6)		4.9		5.2
Environmental credits	2.8		(0.3)		2.5		15.5
Total definite-lived intangible assets	186.6		(105.9)		80.7		9.6
Indefinite-lived intangible assets
Land rights(1)	1.2		—		1.2
Total purchased intangible assets	$	187.8	$	(105.9)	$	81.9

	December 31, 2019
($ in millions)	Gross		Accumulated Amortization		Net		Weighted Average Remaining Life (In Years)
Definite-lived intangible assets
Customer relationships	$	108.5	$	(59.7)	$	48.8	3.9
Trade names	44.5		(13.6)		30.9		19.1
Non-competes	18.3		(15.3)		3.0		2.4
Leasehold interests	12.5		(6.7)		5.8		5.4
Favorable contracts	4.0		(3.9)		0.1		0.9
Environmental credits	2.8		(0.2)		2.6		16.0
Total definite-lived intangible assets	190.6		(99.4)		91.2		9.4
Indefinite-lived intangible assets
Land rights(1)	1.2		—		1.2
Total purchased intangible assets	$	191.8	$	(99.4)	$	92.4

(1) Land rights will be reclassified to property, plant, and equipment upon the division of certain shared properties and settlement of the associated deferred payment.

Schedule of Estimated Remaining Amortization of Definite-Lived Intangible Assets

As of June 30, 2020, the estimated remaining amortization of our definite-lived intangible assets was as follows (in millions):

2020 (remainder of the year)	$	10.4
2021	18.6
2022	12.7
2023	6.3
2024	6.0
Thereafter	26.7
Total	$	80.7