Long-Term Debt - Narrative (Details) $ in Millions				1 Months Ended
	Jun. 30, 2025 USD ($)	Feb. 28, 2025	Jul. 26, 2024 USD ($)	Mar. 31, 2025 USD ($)
Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 850.0
Revolving Credit Facility | Concentra Credit Facilities
Line of Credit Facility [Line Items]
Debt instrument, covenant, leverage ratio	3.8		6.50
Revolving Credit Facility | Term Loan | Concentra Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit spread adjustment		2.25%		2.00%
Revolving Credit Facility | Term Loan | Concentra Term Loan
Line of Credit Facility [Line Items]
Increase in revolving credit facility				$ 102.1
Principal outstanding				$ 950.0
Debt instrument, basis point step down				0.0025
Revolving Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 400.0
Revolving Credit Facility | Revolving Credit Facility | Concentra Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 450.0
Increase in revolving credit facility				$ 50.0
Credit spread adjustment		2.50%		2.00%
Debt instrument, covenant, leverage ratio				3.25
Available borrowing capacity	$ 342.8
Outstanding letters of credit	85.0
Revolving Credit Facility | Standby letters of credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 75.0
Revolving Credit Facility | Letter of Credit | Concentra Revolving Credit Facility
Line of Credit Facility [Line Items]
Outstanding letters of credit	$ 22.2