Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Components of Lease Expense

The components of lease expense were as follows: 

(in millions)	Twelve Months Ended December 31		Twelve Months Ended December 31
	2021		2020
Finance lease cost:
Amortization of right-of-use assets	$	0.5	$	1.0
Interest on lease liabilities		—		—
Total finance lease cost		0.5		1.0
Operating lease cost		13.8		12.8
Short-term lease cost		3.8		3.2
Variable lease cost		0.3		0.3
Total lease cost	$	18.4	$	17.3

Supplemental Cash Flow Information Related to Leases

Supplemental cash flow information related to leases is as follows: 

(in millions)	Twelve Months Ended December 31		Twelve Months Ended December 31
	2021		2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	18.1	$	15.9
Operating cash flows from finance leases		0.5		1.2
Finance cash flows from finance leases		—		—
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	$	5.2	$	5.7
Finance leases		—		—

Supplemental Balance Sheet Information Related to Leases

Supplemental balance sheet information related to leases is as follows: 

(in millions except lease term and discount rate)	December 31 2021			December 31 2020
Operating leases:
Operating lease right-of-use assets	$	35.4		$	40.1
Current portion of operating lease liabilities	$	12.4		$	11.3
Operating lease liabilities, net of current portion		23.1			28.9
Total operating lease liabilities	$	35.5		$	40.2
Finance leases:
Property, plant and equipment at cost	$	5.0		$	9.0
Accumulated depreciation		(4.5	)		(8.0	)
Net property, plant and equipment	$	0.5		$	1.0
Current portion of finance leases	$	0.1		$	0.5
Finance leases, net of current portion		—			0.1
Total finance lease liabilities	$	0.1		$	0.6

(in millions except lease term and discount rate)	December 31 2021			December 31 2020
Weighted average remaining lease term:
Operating leases		4.9 years			4.1 years
Finance leases		0.5 years			1.1 years
Weighted average discount rate:
Operating leases		2.5	%		3.0	%
Finance leases		2.5	%		2.6	%

Maturities of Lease Liabilities

Maturities of lease liabilities were as follows as at December 31, 2021: 

(in millions)	Operating Leases			Finance Leases
Within one year	$	12.5		$	0.1
Year two		9.0			—
Year three		6.0			—
Year four		3.9			—
Year five		3.1			—
Thereafter		3.2			—
Total lease payments		37.7			0.1
Less imputed interest		(2.2	)		—
Total	$	35.5		$	0.1

As of December 31, 2021, additional operating and finance leases that have not yet commenced are $8.8 million.

Future lease payment for all non-cancellable operating and finance leases as of December 31, 2020 were as follows: 

(in millions)	Operating Leases			Finance Leases
Within one year	$	11.4		$	0.5
Year two		9.4			0.1
Year three		8.2			—
Year four		5.5			—
Year five		3.8			—
Thereafter		4.6			—
Total lease payments		42.9			0.6
Less imputed interest		(2.7	)		—
Total	$	40.2		$	0.6