Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases

Schedule of lease costs

		Year Ended
		December 31,
	Classification		2020	2019
		(in millions)
Finance lease cost
Amortization of leased asset	Depreciation	$	10.7	$	5.3
Interest on lease liabilities	Interest expense		1.2		0.6
Operating lease cost(1)	Operating expense		10.0		9.8
Net lease cost		$	21.9	$	15.7

(1)  Includes short-term lease and variable costs of $1.6 million for the years ended December 31, 2020 and 2019. The Company recognized rental expense under operating lease agreements of $9.2 million for the year ended December 31, 2018.

Schedule of lease maturities, Finance Leases,

The following table presents aggregate lease maturities as of December 31, 2020:

	Finance Leases		Operating Leases		Total
	(in millions)
2021	$	15.5	$	8.0	$	23.5
2022		11.8		7.1		18.9
2023		5.8		5.3		11.1
2024		1.3		4.3		5.6
2025		0.4		2.9		3.3
Thereafter		—		4.7		4.7
Total lease payments		34.8		32.3		67.1
Less: interest		1.9		4.5		6.4
Present value of lease liabilities	$	32.9	$	27.8	$	60.7

The following table presents aggregate lease maturities as of December 31, 2019:

	Finance Leases		Operating Leases		Total
	(in millions)
2020	$	8.9	$	7.7	$	16.6
2021		8.8		6.9		15.7
2022		5.1		6.1		11.2
2023		1.2		4.5		5.7
2024		0.5		3.1		3.6
Thereafter		—		6.8		6.8
Total lease payments		24.5		35.1		59.6
Less: interest		1.4		5.6		7.0
Total lease payments	$	23.1	$	29.5	$	52.6

Schedule of lease maturities, Operating Leases

The following table presents aggregate lease maturities as of December 31, 2020:

	Finance Leases		Operating Leases		Total
	(in millions)
2021	$	15.5	$	8.0	$	23.5
2022		11.8		7.1		18.9
2023		5.8		5.3		11.1
2024		1.3		4.3		5.6
2025		0.4		2.9		3.3
Thereafter		—		4.7		4.7
Total lease payments		34.8		32.3		67.1
Less: interest		1.9		4.5		6.4
Present value of lease liabilities	$	32.9	$	27.8	$	60.7

The following table presents aggregate lease maturities as of December 31, 2019:

	Finance Leases		Operating Leases		Total
	(in millions)
2020	$	8.9	$	7.7	$	16.6
2021		8.8		6.9		15.7
2022		5.1		6.1		11.2
2023		1.2		4.5		5.7
2024		0.5		3.1		3.6
Thereafter		—		6.8		6.8
Total lease payments		24.5		35.1		59.6
Less: interest		1.4		5.6		7.0
Total lease payments	$	23.1	$	29.5	$	52.6

Schedule of weighted average remaining lease term and discount rate

	Year ended December 31,
	2020		2019
Weighted-average remaining lease term (in years)
Finance Leases	2.6		3.0
Operating Leases	5.1		5.6
Weighted-average discount rate
Finance Leases	4.53	%	4.56	%
Operating Leases	5.94	%	6.21	%

Schedule of other information related to operating and finance leases

	Year ended December 31,
	2020		2019
	(in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	6.6	$	6.3
Operating cash flows from finance leases		1.2		0.6
Financing cash flows from finance leases		10.7		5.0
Right-of-use assets obtained in exchange for lease obligations:
Finance leases		20.5		23.5
Operating leases		5.8		10.8