Selected Balance Sheet Information: Changes to Allowance for Credit Losses (Details) - USD ($) $ in Millions |
6 Months Ended | |
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Jun. 30, 2026 |
Jun. 30, 2025 |
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| Selected Balance Sheet Information [Abstract] | ||
| Balance at Beginning of Year | $ 2.4 | $ 2.1 |
| Additions Charged to Costs and Expenses | 2.9 | 4.4 |
| Recoveries and Other Additions | 1.7 | 1.6 |
| Write-offs and Other Deductions | (4.7) | (4.4) |
| Balance at End of Year | $ 2.3 | $ 3.7 |
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- Definition Selected Balance Sheet Information [Abstract] No definition available.
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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in allowance for credit loss on accounts receivable, from recovery. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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