Commitments and Contingencies (Details) $ in Millions	1 Months Ended	3 Months Ended
Commitments and Contingencies (Details) $ in Millions	Feb. 29, 2024 class_action_lawsuit patient	Mar. 31, 2024 USD ($)
Commitments and Contingencies
Number of patients \| patient	4,000,000
Number of class action lawsuits \| class_action_lawsuit	6
Professional liability claims \| Critical Illness Recovery Hospitals, Rehabilitation Hospitals And Outpatient Rehabilitiation
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		$ 37.0
Professional liability claims \| Concentra
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		29.0
Professional liability claims \| Joint Venture Operations
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		80.0
Professional liability claims \| Joint Venture Operations \| Minimum
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		23.0
Professional liability claims \| Joint Venture Operations \| Maximum
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		33.0
General Liability \| Critical Illness Recovery Hospitals, Rehabilitation Hospitals And Outpatient Rehabilitiation
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		40.0
General Liability \| Concentra
Commitments and Contingencies
Total annual aggregate limit of insurance coverage		$ 29.0