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Uncompensated Care (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Health Care Trust Funds [Line Items]      
Total uncompensated care $ 1,998,284 $ 2,201,138 $ 2,184,064
Uncompensated care, percentage 100.00% 100.00% 100.00%
Charity Care      
Health Care Trust Funds [Line Items]      
Total uncompensated care $ 661,965 $ 622,668 $ 672,326
Uncompensated care, percentage 33.00% 28.00% 31.00%
Uninsured Discounts      
Health Care Trust Funds [Line Items]      
Total uncompensated care $ 1,336,319 $ 1,578,470 $ 1,511,738
Uncompensated care, percentage 67.00% 72.00% 69.00%