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Commitments and Contingencies - Additional Information (Detail) £ in Millions |  |  |  | 12 Months Ended |  |  |  |  |  |  |
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Oct. 10, 2024 USD ($) | Sep. 27, 2024 USD ($) Plaintiffs | Mar. 28, 2024 USD ($) | Dec. 31, 2024 USD ($) Facility | Dec. 31, 2024 GBP (£) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2024 GBP (£) Facility | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | $ 623,998,000 |  | $ 561,789,000 | $ 496,416,000 |  |  |  |  |  | $ 463,678,000 |  |  |  |  |
Purchased several excess policies through commercial insurance carriers per occurrence excess claim amount |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability, current |  |  |  | 85,000,000 |  | 70,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Compensation liability claims |  |  |  | 137,000,000 |  | 130,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Compensation and related benefits |  |  |  | 58,000,000 |  | 55,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Maximum insurance deductible |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impact of information technology incident on revenue |  |  |  |  |  |  | 13,000,000 |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 436,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Defined benefit pension plan estimated payments through 2089 |  |  |  | 133,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other retirement plan liabilities |  |  |  | $ 26,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-tax decrease to reserves for self-insured workers' compensation liability claims |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |
Behavioral health care facilities with outside owners holding non-controlling minority interest | Facility |  |  |  | 6 |  |  |  |  |  |  |  | 6 |  |  |  |  |  |
Behavioral health care facilities share of construction costs scheduled to be completed in 2025 | Facility |  |  |  | 2 |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Self insurance reserve amount exhausted |  |  |  | $ 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial insurance amount exhausted |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
District Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected aggregate development and construction cost |  |  |  | 439,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Development and construction cost incurred |  |  |  | $ 344,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease initial terms |  |  |  | 75 years |  |  |  |  |  |  |  | 75 years |  |  |  |  |  |
Committment to expend |  |  |  | $ 14,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Projected commitment expend period |  |  |  | 12 years | 12 years |  |  |  |  |  |  |  |  |  |  |  |  |
The Pavilion Behavioral Health System |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate insurance coverage |  |  |  | $ 221,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Pavilion Behavioral Health System | Compensatory Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | $ 475,000,000 |  | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
The Pavilion Behavioral Health System | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | 120,000,000 |  | $ 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | Plaintiffs |  | 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Compensatory Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | $ 60,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Trebled Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | 180,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | $ 120,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumberland Hospital for Children and Adolescents | Compensatory Damages, Trebled And Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of plaintiffs | Plaintiffs |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Department of Human Services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of legal settlement amount on demand |  |  |  | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount claimed from over payments of legal settlements |  |  |  |  |  |  |  | $ 7,000,000 | $ 8,000,000 | $ 7,000,000 | $ 4,000,000 |  |  |  |  |  |  |
Amount claimed from over payments of legal settlements due to change in calculations |  |  |  |  |  |  |  | $ 3,000,000 | 2,000,000 | $ 2,000,000 |  |  |  |  |  |  |  |
Revenue Cycle Data Processing Services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 52,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electronic Health Records And Revenue Cycle Application |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 183,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Software Applications |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated Construction Commitment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 32,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Related to Certain Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 159,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Health Insurer and Self-insured Employee Benefit Plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 118,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Healthcare Infrastructure |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 61,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Enterprise Resource Planning Application |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 85,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Administrative Software Applications |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Combined estimated future purchase obligations |  |  |  | 43,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
All Other Events |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum insurance deductible |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earthquake Wind Hail and Flood |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum insurance deductible |  |  |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cygnet Health Care Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property insurance | £ |  |  |  |  | £ 1,500 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial insurance carriers per occurrence |  |  |  | 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease initial terms |  |  |  | 10 years |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |
Maximum | The Pavilion Behavioral Health System | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Cumberland Hospital for Children and Adolescents | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded |  | $ 1,050,000.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of insurance deductible |  |  |  | 5.00% |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |
Maximum | Earthquake | CALIFORNIA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | OTHER STATES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | Faulty Zones of UNITED STATES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | PUERTO RICO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 40,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Earthquake | California, New Madrid Seismic Zone, Pacific Northwest Seismic Zone, Alaska and certain counties in Nevada |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Flood |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Flood | Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Flood | PUERTO RICO |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial property insurance policies covering catastrophic losses |  |  |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on business interruption insurance recovery |  |  |  | $ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease initial terms |  |  |  | 5 years |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Minimum | District Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Committment to expend |  |  |  | $ 75,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | The Pavilion Behavioral Health System | Punitive Damages |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Damages awarded | $ 120,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of insurance deductible |  |  |  | 3.00% |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |
Professional Liability | The Pavilion Behavioral Health System | Multi-Plaintiff Matters |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | $ 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Professional Liability | Cumberland Hospital for Children and Adolescents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Liability | The Pavilion Behavioral Health System |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Liability | Cumberland Hospital for Children and Adolescents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured retention amounts |  |  |  | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
General And Professional Liability Insurance Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 79,000,000 |  | 25,000,000 | 16,000,000 |  |  |  |  |  |  |  |  |  |  |
General and Professional Liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 486,888,000 |  | 431,485,000 | 371,900,000 |  |  |  |  |  | 348,693,000 |  |  |  |  |
Subsidiaries | Professional Liability | Cygnet Health Care Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability | £ |  |  |  |  |  |  |  |  |  |  |  | £ 20 |  |  |  |  |  |
Subsidiaries | Professional Liability | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 20,000,000 |  | 20,000,000 | 20,000,000 |  |  |  |  |  | 20,000,000 | $ 10,000,000 | $ 5,000,000 | $ 5,000,000 | $ 5,000,000 | $ 10,000,000
Subsidiaries | General Liability | Cygnet Health Care Limited |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability | £ |  |  |  |  |  |  |  |  |  |  |  | £ 25 |  |  |  |  |  |
Subsidiaries | General Liability | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-insured for professional and general liability |  |  |  | 3,000,000 |  | 3,000,000 | 3,000,000 |  |  |  |  |  | 3,000,000 | $ 3,000,000 | $ 3,000,000 | $ 3,000,000 | $ 3,000,000 | $ 3,000,000
Subsidiaries | General And Professional Liability Insurance Policies | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased several excess policies through commercial insurance carriers per occurrence |  |  |  | $ 175,000,000 |  | $ 165,000,000 | $ 162,000,000 |  | $ 250,000,000 |  |  |  | $ 155,000,000 |  |  |  |  |

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