v3.25.2
Cover
Jul. 30, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 30, 2025
Current Fiscal Year End Date --12-31
Entity File Number 001-34465
Entity Registrant Name SELECT MEDICAL HOLDINGS CORPORATION
Entity Central Index Key 0001320414
Entity Tax Identification Number 20-1764048
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 4714 Gettysburg Road
Entity Address, Address Line Two P.O. Box 2034
Entity Address, City or Town Mechanicsburg
Entity Address, State or Province PA
Entity Address, Postal Zip Code 17055
City Area Code 717
Local Phone Number 972-1100
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.001 per share
Trading Symbol SEM
Security Exchange Name NYSE
Entity Emerging Growth Company false