EXHIBITS AND FINANCIAL STATEMENT SCHEDULE - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] | |||
Balance at beginning of year | $ 1,091,310 | $ 791,842 | $ 746,388 |
Amount charged against operating revenue | 5,921,519 | 5,436,786 | 4,776,447 |
Accounts receivable contractual adjustments and write-offs (net of recoveries) | (5,761,124) | (5,137,318) | (4,730,993) |
Balance at end of year | $ 1,251,705 | $ 1,091,310 | $ 791,842 |