Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease Cost

The following table summarizes the Company's lease costs:

	Year Ended December 31,
	2020		2019
	(In millions)
Operating lease cost	$	15.5	$	14.2
Finance lease cost:
Amortization	2.9		4.0
Interest on lease liabilities	2.7		2.9
Short-term lease cost	0.5		0.8
Total lease costs	$	21.6	$	21.9

The following table summarizes the supplemental cash flow information related to leases:

	Year Ended December 31,
	2020		2019
	(In millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	13.7	$	14.2
Operating cash flows for finance leases	2.7		2.9
Financing cash flows for finance leases	2.1		3.3
Assets obtained in exchange for lease obligations:
Operating leases	11.9		7.7
Finance leases	—		23.8

Lease Assets and Liabilities

The following table summarizes the supplemental balance sheet information related to leases:

	As of December 31,
	2020			2019
	(In millions)
Operating leases:
Operating lease right-of-use assets	$	46.8		$	48.0
Operating lease liabilities (component of other current liabilities)	$	13.4		$	12.0
Operating lease liabilities, noncurrent	35.7			39.1
	$	49.1		$	51.1
Finance leases:
Property, plant and equipment	$	52.9		$	52.9
Accumulated depreciation	(8.6)			(5.8)
Property, plant and equipment, net	$	44.3		$	47.1
Current portion of long-term debt	$	2.2		$	2.1
Long-term debt	43.4			45.6
Total finance lease liability	$	45.6		$	47.7
Weighted-average remaining lease term (in years):
Operating leases	7			6
Finance leases	17			18
Weighted-average discount rate:
Operating leases	4.4		%	4.7		%
Finance leases	5.9		%	5.2		%

Finance Lease Maturity Schedule

The following table presents the maturities of lease liabilities and lease revenue in effect as of December 31, 2020:

Year Ending December 31,	Operating Leases		Finance Leases		Future Minimum Rental Income
	(In millions)
2021	$	14.9	$	4.7	$	1.6
2022	13.0		4.4		1.6
2023	6.6		3.7		1.0
2024	3.0		3.8		0.9
2025	2.9		3.8		0.8
Thereafter	16.0		53.7		5.8
Total minimum rentals	56.4		74.1		11.7
Less: imputed interest	(7.3)		(28.5)		—
Total	$	49.1	$	45.6	$	11.7

Operating Lease Maturity Schedule

The following table presents the maturities of lease liabilities and lease revenue in effect as of December 31, 2020:

Year Ending December 31,	Operating Leases		Finance Leases		Future Minimum Rental Income
	(In millions)
2021	$	14.9	$	4.7	$	1.6
2022	13.0		4.4		1.6
2023	6.6		3.7		1.0
2024	3.0		3.8		0.9
2025	2.9		3.8		0.8
Thereafter	16.0		53.7		5.8
Total minimum rentals	56.4		74.1		11.7
Less: imputed interest	(7.3)		(28.5)		—
Total	$	49.1	$	45.6	$	11.7