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Leases (Tables) | 12 Months Ended
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Dec. 31, 2023
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 |  |  | Twelve Months Ended December 31 |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Finance lease cost: |  |  |  |  |  |  |  |  |
Amortization of right-of-use assets |  | $ | — |  |  | $ | — |  |  | $ | 0.5 |
Interest on lease liabilities |  |  | — |  |  |  | — |  |  |  | — |
Total finance lease cost |  |  | — |  |  |  | — |  |  |  | 0.5 |
Operating lease cost |  |  | 17.9 |  |  |  | 15.6 |  |  |  | 13.8 |
Short-term lease cost |  |  | 8.1 |  |  |  | 7.2 |  |  |  | 3.8 |
Variable lease cost |  |  | — |  |  |  | 0.3 |  |  |  | 0.3 |
Total lease cost |  | $ | 26.0 |  |  | $ | 23.1 |  |  | $ | 18.4 |
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 |  |  | Twelve Months Ended December 31 |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |  |  |
Operating cash flows from operating leases |  | $ | 26.1 |  |  | $ | 23.1 |  |  | $ | 18.1 |
Operating cash flows from finance leases |  |  | — |  |  |  | 0.1 |  |  |  | 0.5 |
Right-of-use assets obtained in exchange for new lease obligations: |  |  |  |  |  |  |  |  |
Operating leases |  | $ | 7.8 |  |  | $ | 14.9 |  |  | $ | 5.2 |
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, 2023 |  |  | December 31, 2022 |
Operating leases: |  |  |  |  |  |
Operating lease right-of-use assets |  | $ | 45.1 |  |  | $ | 45.3 |
Current portion of operating lease liabilities |  | $ | 13.6 |  |  | $ | 13.9 |
Operating lease liabilities, net of current portion |  |  | 31.6 |  |  |  | 31.4 |
Total operating lease liabilities |  | $ | 45.2 |  |  | $ | 45.3 |
Weighted average remaining lease term: |  |  |  |  |  |
Operating leases |  | 6.2 years |  |  | 5.5 years |
Weighted average discount rate: |  |  |  |  |  |
Operating leases |  |  | 3.5 | % |  |  | 2.6 | %
Maturities of Lease Liabilities | Maturities of lease liabilities were as follows as at December 31, 2023:
(in millions) |  | Operating Leases |
Within one year |  | $ | 14.0 |
Year two |  |  | 10.0 |
Year three |  |  | 7.3 |
Year four |  |  | 3.3 |
Year five |  |  | 3.0 |
Thereafter |  |  | 12.6 |
Total lease payments |  |  | 50.2 |
Less imputed interest |  |  | (5.0 | )
Total |  | $ | 45.2 |
As of December 31, 2023, additional operating and finance leases that have not yet commenced are $5.8 million. Future lease payment for all non-cancellable operating and finance leases as of December 31, 2022 were as follows:
(in millions) |  | Operating Leases |
Within one year |  | $ | 14.3 |
Year two |  |  | 8.9 |
Year three |  |  | 6.4 |
Year four |  |  | 5.2 |
Year five |  |  | 1.5 |
Thereafter |  |  | 13.5 |
Total lease payments |  |  | 49.8 |
Less imputed interest |  |  | (4.5 | )
Total |  | $ | 45.3 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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