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Segment Reporting (Schedule Of Financial Information By Operating Segments) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Gross inpatient revenues | $ 17,554,869 | $ 13,456,537 | $ 11,976,173
Gross outpatient revenues | 6,291,445 | 5,170,507 | 4,445,253
Total net revenues | 7,500,198 | 5,568,185 | 5,202,379
Income (loss) before income taxes | 696,336 | 428,097 | 474,722
Total assets | 7,665,245 | 7,527,936 | 3,964,463
Acute Care Hospital Services [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Gross inpatient revenues | 12,025,664 | 10,890,171 | 9,901,032
Gross outpatient revenues | 5,629,420 | 4,771,070 | 4,100,427
Total net revenues | 4,071,570 | 3,901,815 | 3,810,828
Income (loss) before income taxes | 351,917 | 363,427 | 386,208
Total assets | 2,852,549 | 2,755,697 | 2,748,175
Behavioral Health Services [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Gross inpatient revenues | 5,529,205 | 2,566,366 | 2,075,141
Gross outpatient revenues | 608,785 | 350,192 | 282,473
Total net revenues | 3,401,118 | 1,635,455 | 1,315,029
Income (loss) before income taxes | 732,674 | 353,203 | 281,541
Total assets | 4,383,432 | 4,360,710 | 998,508
Other [Member] |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |
Gross outpatient revenues | 53,240 | 49,245 | 62,353
Total net revenues | 27,510 | 30,915 | 76,522
Income (loss) before income taxes | (388,255) | (288,533) | (193,027)
Total assets | $ 429,264 | $ 411,529 | $ 217,780

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