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Supplemental Cash Flow Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Non-cash transactions: |  |  |
Capital expenditures included in current liabilities | $ 367.0 | $ 315.0 | $ 275.1
Assets acquired under a finance lease |  | 64.5 | 19.3
Assets acquired under an operating lease |  | 5.6 | 8.8
Assets recorded for asset retirement obligations | 277.4 | 61.1 | 6.3
Purchase Contract Liability | 0.0 | 0.0 | 65.0
Schedule of interest and income taxes paid: |  |  |
Cash paid for interest on debt, net of interest capitalized amounts | 468.2 | 433.9 | 343.8
Cash paid for interest on finance leases | 13.5 | 8.6 | 8.5
Cash paid for income taxes, net of refunds | 4.3 | 9.4 | $ 7.2
Finance Lease, Interest Payment on Liability | $ 11.2 | $ 9.3 |

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- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-5 + Details
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