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Schedule II - Valuation and Qualifying Accounts (Details) - Reserve for Uncollectible Accounts [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Movement in Reserve [Roll Forward]    
Balance at beginning of year $ 1,005,000 $ 855,000
Additions - charged to cost and expenses 1,071,758 538,152
Additions - recoveries 30,658 24,646
Deductions 497,416 412,798
Balance at end of year $ 1,610,000 $ 1,005,000