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Schedule of Disaggregates Revenue by Major Source (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 3,012,987 | $ 2,829,667
Percentage of Net Revenue |  | 100.00% | 100.00%
Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 424,005 | $ 445,642
Percentage of Net Revenue |  | 14.00% | 16.00%
Managed Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 333,102 | $ 281,229
Percentage of Net Revenue |  | 11.00% | 10.00%
Medicaid |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 264,781 | $ 302,977
Percentage of Net Revenue |  | 9.00% | 11.00%
Managed Medicaid |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 470,256 | $ 426,012
Percentage of Net Revenue |  | 16.00% | 15.00%
Managed Care (HMO and PPOs) |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 947,554 | $ 881,424
Percentage of Net Revenue |  | 31.00% | 31.00%
UK Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 164,666 | $ 136,850
Percentage of Net Revenue |  | 5.00% | 5.00%
Other Patient Revenue and Adjustments, Net |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 214,533 | $ 187,659
Percentage of Net Revenue |  | 7.00% | 7.00%
Other Non-patient Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 194,090 | $ 167,874
Percentage of Net Revenue |  | 6.00% | 6.00%
Acute Care Hospital Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 1,694,542 | $ 1,521,049
Percentage of Net Revenue |  | 100.00% | 100.00%
Acute Care Hospital Services | Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 335,513 | $ 326,025
Percentage of Net Revenue |  | 20.00% | 21.00%
Acute Care Hospital Services | Managed Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 275,560 | $ 221,991
Percentage of Net Revenue |  | 16.00% | 15.00%
Acute Care Hospital Services | Medicaid |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 111,641 | $ 127,959
Percentage of Net Revenue |  | 7.00% | 8.00%
Acute Care Hospital Services | Managed Medicaid |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 135,498 | $ 123,455
Percentage of Net Revenue |  | 8.00% | 8.00%
Acute Care Hospital Services | Managed Care (HMO and PPOs) |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 598,810 | $ 540,737
Percentage of Net Revenue |  | 35.00% | 36.00%
Acute Care Hospital Services | UK Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 0 | $ 0
Percentage of Net Revenue |  | 0.00% | 0.00%
Acute Care Hospital Services | Other Patient Revenue and Adjustments, Net |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 94,250 | $ 64,599
Percentage of Net Revenue |  | 6.00% | 4.00%
Acute Care Hospital Services | Other Non-patient Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 143,270 | $ 116,283
Percentage of Net Revenue |  | 8.00% | 8.00%
Behavioral Health Services |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues | [1] | $ 1,315,337 | $ 1,306,109
Percentage of Net Revenue |  | 100.00% | 100.00%
Behavioral Health Services | Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 88,492 | $ 119,617
Percentage of Net Revenue |  | 7.00% | 9.00%
Behavioral Health Services | Managed Medicare |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 57,542 | $ 59,238
Percentage of Net Revenue |  | 4.00% | 5.00%
Behavioral Health Services | Medicaid |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 153,140 | $ 175,018
Percentage of Net Revenue |  | 12.00% | 13.00%
Behavioral Health Services | Managed Medicaid |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 334,758 | $ 302,557
Percentage of Net Revenue |  | 25.00% | 23.00%
Behavioral Health Services | Managed Care (HMO and PPOs) |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 348,744 | $ 340,687
Percentage of Net Revenue |  | 27.00% | 26.00%
Behavioral Health Services | UK Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 164,666 | $ 136,850
Percentage of Net Revenue |  | 13.00% | 10.00%
Behavioral Health Services | Other Patient Revenue and Adjustments, Net |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 120,283 | $ 123,060
Percentage of Net Revenue |  | 9.00% | 9.00%
Behavioral Health Services | Other Non-patient Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 47,712 | $ 49,082
Percentage of Net Revenue |  | 4.00% | 4.00%
Other |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 3,108 | $ 2,509
Other | Other Non-patient Revenue |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Net revenues |  | $ 3,108 | $ 2,509
[1] | Includes net revenues generated from our behavioral health care facilities located in the U.K. amounting to approximately $165 million and $137 million for the three-month periods ended March 31, 2021 and 2020, respectively. Total assets at our U.K. behavioral health care facilities were approximately $1.355 billion and $1.197 billion as of March 31, 2021 and 2020, respectively.

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