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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Components of Lease Cost | The components of lease cost follow:
(in millions) |  |  |  |  |  | 2020 |  | 2019
Operating lease cost |  |  |  |  |  | $ | 26.8 |  |  | $ | 24.9 |
Variable lease cost |  |  |  |  |  | 2.7 |  |  | 3.7 |
Short-term lease cost |  |  |  |  |  | 3.9 |  |  | 2.7 |
Total lease cost |  |  |  |  |  | $ | 33.4 |  |  | $ | 31.3 |
Summary of Lease Assets and Lease Liabilities | A summary of lease assets and liabilities follows:
(in millions) |  | December 31, 2020 |  | December 31, 2019
Assets: |  |  |  |
Operating lease right-of-use assets(1) |  | $ | 68.3 |  |  | $ | 74.9 |
Liabilities: |  |  |  |
Operating lease liabilities - current(2) |  | 21.5 |  |  | 20.9 |
Operating lease liabilities - long-term(3) |  | 53.1 |  |  | 59.7 |
Total lease liabilities |  | $ | 74.6 |  |  | $ | 80.6 |
(1)Included in other long-term assets. (2)Included in accrued and other current liabilities. (3)Included in other long-term liabilities.
Maturity of Lease Liabilities | Maturity of lease liabilities as of December 31, 2020, follow:
(in millions) |  |  |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | Thereafter |  | Total
Lease payments |  |  |  | $ | 23.4 |  |  | $ | 17.5 |  |  | $ | 11.7 |  |  | $ | 7.9 |  |  | $ | 4.7 |  |  | $ | 18.9 |  |  | $ | 84.1 |
Less: imputed interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9.5) |
Total lease liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 74.6 |
Lease Term and Discount Rate | Lease Term and Discount Rate
|  | December 31, 2020 |  | December 31, 2019
Operating leases: |  |  |  |
Weighted-average remaining lease term (in years) |  | 5.9 |  | 6.3
Weighted-average discount rate |  | 3.3 | % |  | 3.4 | %

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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 http://asc.fasb.org/extlink&oid=121609121&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 http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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