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LEASES (Tables) | 9 Months Ended
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Sep. 30, 2020
Leases [Abstract] |
Lease Assets and Liabilities Included in the Consolidated Balance Sheet[Table Text Block] | The following table sets forth supplemental cash flow information related to our leases:
|  | Nine Months Ended
|  | September 30,
|  | 2020 |  | 2019
|  | (Thousands of dollars)
Cash paid for amounts included in the measurement of lease liabilities |  |  |  |
Operating cash flows for operating leases |  | $ | 9,662 |  |  | $ | 4,972 |
Financing cash flows for finance lease |  | $ | 1,443 |  |  | $ | 1,307 |
Right-of-use assets obtained in exchange for operating lease liabilities (noncash) |  | $ | 99,197 |  |  | $ | 3,663 |
Lessee, Operating Lease, Liability, Maturity [Table Text Block] | The following table sets forth the maturity of our lease liabilities as of September 30, 2020:
|  | Finance Lease |  | Operating Leases
|  | (Millions of dollars)
Remainder of 2020 |  | $ | 1.2 |  |  | $ | 4.1 |
2021 |  | 4.5 |  |  | 16.4 |
2022 |  | 4.5 |  |  | 15.1 |
2023 |  | 4.5 |  |  | 13.8 |
2024 |  | 4.5 |  |  | 12.5 |
2025 and beyond |  | 17.1 |  |  | 58.2 |
Total lease payments |  | 36.3 |  |  | 120.1 |
Less: Interest |  | 11.5 |  |  | 15.6 |
Present value of lease liabilities |  | $ | 24.8 |  |  | $ | 104.5 |
Finance Lease, Liability, Maturity [Table Text Block] | The following table sets forth the maturity of our lease liabilities as of September 30, 2020:
|  | Finance Lease |  | Operating Leases
|  | (Millions of dollars)
Remainder of 2020 |  | $ | 1.2 |  |  | $ | 4.1 |
2021 |  | 4.5 |  |  | 16.4 |
2022 |  | 4.5 |  |  | 15.1 |
2023 |  | 4.5 |  |  | 13.8 |
2024 |  | 4.5 |  |  | 12.5 |
2025 and beyond |  | 17.1 |  |  | 58.2 |
Total lease payments |  | 36.3 |  |  | 120.1 |
Less: Interest |  | 11.5 |  |  | 15.6 |
Present value of lease liabilities |  | $ | 24.8 |  |  | $ | 104.5 |

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- Definition Includes information about operating and finance lease assets and liabilities included in the Consolidated Balance Sheet. + References No definition available. + Details
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- Definition Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance 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=77888426&loc=SL77918701-209980 + 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=77888426&loc=SL77918701-209980 + Details
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