Goodwill and Intangibles, net (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of the Changes in the Carrying Amount of Goodwill by Reporting Unit

The carrying amount of goodwill by segment was as follows (in millions):

	Construction			Energy		Broadcasting			Total
Balance at December 31, 2019		$	89.0	$	2.1		$	21.4	$	112.5
Translation		(0.5)		—			—		(0.5)
Balance at March 31, 2020		$	88.5	$	2.1		$	21.4	$	112.0

Schedule of Indefinite-Lived Intangible Assets

The carrying amount of indefinite-lived intangible assets were as follows (in millions):

	March 31,		December 31,
	2020		2019
FCC licenses	$	136.6	$	136.2
State licenses	2.5		2.5
Total	$	139.1	$	138.7

Schedule of Intangible Assets Subject to Amortization

The gross carrying amount and accumulated amortization of amortizable intangible assets by major intangible asset class were as follows (in millions):

	Weighted-Average Original Useful Life	March 31, 2020							December 31, 2019
		Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Trade names	13 Years	$	24.2		$	(7.1)	$	17.1	$	24.2		$	(6.6)	$	17.6
Customer relationships	10 Years	48.3			(14.1)		34.2		48.6			(13.1)		35.5
Channel sharing arrangements	35 Years	27.2			(1.1)		26.1		27.2			(0.9)		26.3
Other	7 Years	5.6			(2.0)		3.6		5.5			(1.9)		3.6
Total		$	105.3		$	(24.3)	$	81.0	$	105.5		$	(22.5)	$	83.0

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Excluding the impact of any future acquisitions, dispositions or change in foreign currency, the Company estimates the annual amortization expense of amortizable intangible assets for the next five fiscal years will be as follows (in millions):

2020	$	6.0
2021	7.8
2022	7.6
2023	7.5
2024	7.0
Thereafter	45.1
Total	$	81.0