Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Schedule of Long Term Debt

	As of December 31,
	2018		2017
	(in millions)
Senior notes	344.9		444.2
Revolving debt	116.7		173.5
Other notes payable	3.3		0.8
	464.9		618.5
Less current maturities of long-term debt	2.4		0.2
	$	462.5	$	618.3

Schedule of Future Principal Payments on Long Term Debt

Future principal payments on long-term debt are as follows:

	(in millions)
2019	$	2.4
2020	0.3
2021	0.3
2022	0.1
2023	116.8
Thereafter	350.1
	$	470.0