Summary of Significant Accounting Policies - Schedule of Variable Interest Entities (Details) - USD ($) $ in Thousands		Sep. 30, 2026	Dec. 31, 2025
Variable Interest Entity [Line Items]
Current installments of long-term debt	[1]	$ 28,763	$ 23,444
Accounts payable	[1]	399,035	457,936
Accrued salaries and benefits	[1]	274,135	296,260
Other accrued expenses and liabilities	[1]	260,163	268,904
Total liabilities held for sale		55,262	0
Total current liabilities	[1]	1,017,358	1,046,544
Long-term debt, less current installments	[1]	1,069,688	1,075,782
Self-insured liabilities	[1]	232,538	241,050
Other long-term liabilities	[1]	85,059	76,636
Total liabilities	[1]	3,571,336	3,605,244
Nonrelated Party
Variable Interest Entity [Line Items]
Long-term operating lease liability	[1]	281,402	260,600
Related Party
Variable Interest Entity [Line Items]
Long-term operating lease liability	[1]	885,291	904,632
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Current installments of long-term debt		3,551	3,635
Accounts payable		81,548	102,482
Accrued salaries and benefits		27,302	36,900
Other accrued expenses and liabilities		43,939	67,419
Total liabilities held for sale		55,262	0
Total current liabilities		211,602	210,436
Long-term debt, less current installments		6,988	9,734
Self-insured liabilities		680	677
Other long-term liabilities		1,552	3,826
Total liabilities		301,717	335,139
Variable Interest Entity, Primary Beneficiary | Nonrelated Party
Variable Interest Entity [Line Items]
Long-term operating lease liability		78,594	101,153
Variable Interest Entity, Primary Beneficiary | Related Party
Variable Interest Entity [Line Items]
Long-term operating lease liability		$ 2,301	$ 9,313

[1] As of September 30, 2026 and December 31, 2025, the unaudited condensed consolidated balance sheets included total liabilities of consolidated variable interest entities of $301.7 million and $335.1 million, respectively. Refer to Note 2, Summary of Significant Accounting Policies, for further discussion.