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Leases (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Lease Cost | Income statement presentation for these costs (when ultimately recognized on the income statement) is also included:
Year Ended December 31, (in millions) | Income Statement Classification | 2020 |  | 2019
Finance lease cost |  |  |  |
Amortization of right-of-use assets | Depreciation and amortization | $ | 23.4 |  |  | $ | 15.5 |
Interest on lease liabilities | Interest expense, net | 11.1 |  |  | 11.3 |
Total finance lease cost |  | 34.5 |  |  | 26.8 |
Operating lease cost | Operation and maintenance | 20.3 |  |  | 17.9 |
Short-term lease cost | Operation and maintenance | — |  |  | 1.0 |
Total lease cost |  | $ | 54.8 |  |  | $ | 45.7 |
Right-of-Use Assets and Liabilities | Our right-of-use assets and liabilities are presented in the following lines on the Consolidated Balance Sheets:
At December 31, (in millions) | Balance Sheet Classification | 2020 |  | 2019
Assets |  |  |  |
Finance leases | Net Property, Plant and Equipment | $ | 176.8 |  |  | $ | 179.5 |
Operating leases | Deferred charges and other | 39.9 |  |  | 64.2
Total leased assets |  | 216.7 |  |  | 243.7
Liabilities |  |  |  |
Current |  |  |  |
Finance leases | Current portion of long-term debt | 23.3 |  |  | 13.4
Operating leases | Other accruals | 10.3 |  |  | 13.2
Noncurrent |  |  |  |
Finance leases | Long-term debt, excluding amounts due within one year | 171.7 |  |  | 188.1
Operating leases | Other noncurrent liabilities | 29.9 |  |  | 51.6
Total lease liabilities |  | $ | 235.2 |  |  | $ | 266.3 |
Lease Information | Other pertinent information related to leases was as follows:
Year Ended December 31, (in millions) | 2020 |  | 2019
Cash paid for amounts included in the measurement of lease liabilities |  |  |
Operating cash flows used for finance leases | $ | 11.1 |  |  | $ | 11.3 |
Operating cash flows used for operating leases | 20.2 |  |  | 17.9
Financing cash flows used for finance leases | 18.4 |  |  | 10.6
Right-of-use assets obtained in exchange for lease obligations |  |  |
Finance leases | 59.3 |  |  | 26.4
Operating leases | $ | 10.9 |  |  | $ | 13.4 |
| December 31, 2020 |  | December 31, 2019
Weighted-average remaining lease term (years) |  |  |
Finance leases | 11.2 |  | 14.8
Operating leases | 8.0 |  | 9.2
Weighted-average discount rate |  |  |
Finance leases | 5.1 | % |  | 5.9 | %
Operating leases | 4.0 | % |  | 4.3 | %
Lease Maturity | Maturities of our lease liabilities as of December 31, 2020 were as follows:
As of December 31, 2020, (in millions) | Total | Finance Leases | Operating Leases
2021 | $ | 44.4 |  | $ | 32.7 |  | $ | 11.7 |
2022 | 37.4 |  | 32.2 |  | 5.2 |
2023 | 33.5 |  | 28.8 |  | 4.7 |
2024 | 25.3 |  | 20.8 |  | 4.5 |
2025 | 19.8 |  | 16.1 |  | 3.7 |
Thereafter | 152.3 |  | 134.1 |  | 18.2 |
Total lease payments | 312.7 |  | 264.7 |  | 48.0 |
Less: Imputed interest | (77.5) |  | (69.7) |  | (7.8) |
Total | 235.2 |  | 195.0 |  | 40.2 |
Reported as of December 31, 2020 |  |  |
Short-term lease liabilities | 33.6 |  | 23.3 |  | 10.3 |
Long-term lease liabilities | 201.6 |  | 171.7 |  | 29.9 |
Total lease liabilities | $ | 235.2 |  | $ | 195.0 |  | $ | 40.2 |

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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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