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Leases (Tables) | 12 Months Ended
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Dec. 31, 2022
Leases [Abstract] |
Summary of Lease Expense Cost | The components of lease expense were as follows:
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Operating lease cost: |  |  |  |  |
Amortization of right-of-use assets | $ | 5.6 |  |  | $ | 5.6 |  |  | $ | 4.5 |
Interest on lease liabilities | 1.1 |  |  | 1.3 |  |  | 1.1 |
Total operating lease cost | $ | 6.7 |  |  | $ | 6.9 |  |  | $ | 5.6 |
Schedule of Leases Supplemental Balance Sheets |
|  | December 31,
Leases | Classification | 2022 |  | 2021
Operating lease right-of-use assets | Other assets | $ | 19.4 |  |  | $ | 28.3 |
Operating lease liabilities, current portion | Other current liabilities | $ | 5.8 |  |  | $ | 5.8 |
Operating lease liabilities | Other liabilities | 14.8 |  |  | 24.2 |
Total operating lease liabilities |  | $ | 20.6 |  |  | $ | 30.0 |
Operating leases: |  |  |  |
Weighted average remaining lease term (years) |  | 5.9 |  | 7.0
Weighted average discount rate |  | 4.1 | % |  | 4.1 | %
Lessee, Operating Lease, Liability, Maturity | Lease maturities as of December 31, 2022, are as follows:
Year | As of December 31, 2022
2023 | $ | 6.5 |
2024 | 4.3 |
2025 | 2.7 |
2026 | 2.3 |
2027 | 1.8 |
Thereafter | 5.9 |
Total undiscounted lease liabilities | 23.5 |
Less: Imputed interest | 2.9 |
Total Lease liabilities | $ | 20.6 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980 + Details
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