Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Schedule of Lease Terms and Discount Rates

The following table presents lease terms and discount rates as of December 31, 2021:

	Finance Leases			Operating Leases
Weighted-average lease term (in years)		26.1			7.4
Weighted-average discount rate		3.4	%		3.8	%

Schedule of Lease Assets and Lease Liabilities

The following table summarizes the classification of lease assets and lease liabilities on our Consolidated Balance Sheets (in millions of dollars):

		As of December 31,
Leases	Classification	2021		2020
Assets
Operating lease assets	Operating lease assets	$	46.2	$	26.5
Finance lease assets	Property, plant and equipment, net		8.2		8.1
Total lease assets		$	54.4	$	34.6
Liabilities
Current:
Operating lease liabilities	Other accrued liabilities	$	9.0	$	4.4
Finance lease liabilities	Other accrued liabilities		2.1		1.9
Non-current:
Operating lease liabilities	Long-term portion of operating lease liabilities		40.8		25.6
Finance lease liabilities	Long-term liabilities		6.1		6.2
Total lease liabilities		$	58.0	$	38.1

Components of Lease Cost

The following table summarizes the components of lease cost on our Statements of Consolidated (Loss) Income (in millions of dollars):

	Year Ended December 31,
	2021		2020		2019
Operating lease cost	$	11.0	$	6.8	$	7.5
Short-term lease cost		3.2		1.6		1.2
Finance lease cost:
Amortization of leased assets		2.1		1.6		1.5
Interest on lease liabilities		0.3		0.3		0.3
Total lease cost	$	16.6	$	10.3	$	10.5

Schedule of Maturity of Our Lease Liabilities

The following table presents the maturity of our lease liabilities as of December 31, 2021 (in millions of dollars):

	Finance Leases			Operating Leases
2022	$	2.3		$	9.4
2023		2.0			9.8
2024		1.4			9.1
2025		1.0			5.9
2026		0.7			4.0
Thereafter		5.7			20.7
Total minimum lease payments	$	13.1		$	58.9
Less: interest		(4.9	)		(9.1	)
Present value	$	8.2		$	49.8