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LEASES (Tables) | 6 Months Ended
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Jun. 30, 2024
Leases [Abstract] |
Schedule of Lease Assets and Liabilities, Weighted-Average Lease Term and Discount Rate | Lease right-of-use (ROU) assets and liabilities and the weighted-average lease terms and discount rates are as follows:
dollars in millions | Classification on the Balance Sheet | June 30 2024 | December 31 2023 | June 30 2023
Assets |  |  |
Operating lease ROU assets |  | $ | 646.9 |  | $ | 636.1 |  | $ | 669.5 |
Accumulated amortization |  | (135.1) |  | (124.4) |  | (111.1) |
Operating leases, net | Operating lease right-of-use assets, net | 511.8 |  | 511.7 |  | 558.4 |
Finance lease ROU assets |  | 59.0 |  | 62.3 |  | 91.6 |
Accumulated depreciation |  | (22.2) |  | (20.2) |  | (19.9) |
Finance leases, net | Property, plant & equipment, net | 36.8 |  | 42.1 |  | 71.7 |
Total lease assets |  | $ | 548.6 |  | $ | 553.8 |  | $ | 630.1 |
Liabilities |  |  |
Current |  |  |
Operating | Other current liabilities | $ | 47.9 |  | $ | 47.3 |  | $ | 47.3 |
Finance | Other current liabilities | 11.7 |  | 12.5 |  | 20.0 |
Noncurrent |  |  |
Operating | Noncurrent operating lease liabilities | 507.5 |  | 507.4 |  | 537.5 |
Finance | Other noncurrent liabilities | 13.6 |  | 16.6 |  | 26.3 |
Total lease liabilities |  | $ | 580.7 |  | $ | 583.8 |  | $ | 631.1 |
Lease Term and Discount Rate |  |  |
Weighted-average remaining lease term (years) |  |  |
Operating leases | 19.2 | 19.5 | 19.5
Finance leases | 2.4 | 2.5 | 2.6
Weighted-average discount rate |  |  |
Operating leases | 4.4 | % | 4.3 | % | 4.0 | %
Finance leases | 2.9 | % | 2.4 | % | 1.9 | %
Components of Lease Expense | The components of lease expense are as follows:
| Three Months Ended June 30 | Six Months Ended June 30
in millions | 2024 | 2023 | 2024 | 2023
Finance lease cost |  |  |  |
Depreciation of right-of-use assets | $ | 2.4 |  | $ | 3.4 |  | $ | 4.9 |  | $ | 6.8 |
Interest on lease liabilities | 0.2 |  | 0.2 |  | 0.4 |  | 0.5 |
Operating lease cost | 18.9 |  | 19.8 |  | 37.7 |  | 39.1 |
Short-term lease cost 1 | 11.6 |  | 12.0 |  | 22.7 |  | 23.7 |
Variable lease cost | 4.4 |  | 5.0 |  | 9.7 |  | 10.1 |
Sublease income | (0.8) |  | (1.1) |  | (1.6) |  | (1.8) |
Total lease expense | $ | 36.7 |  | $ | 39.3 |  | $ | 73.8 |  | $ | 78.4 |
1Includes the cost of leases with an initial term of one year or less (including those with terms of one month or less).

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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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- Definition Schedule of Lease Assets and Liabilities, Weighted-Average Lease Term and Discount Rate [Table Text Block] + References No definition available. + Details
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