v3.22.2.2
Document and Entity Information
Nov. 28, 2022
Entity Listings [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Nov. 28, 2022
Entity File Number 001-39439
Entity Registrant Name ATI PHYSICAL THERAPY, INC.
Entity Central Index Key 0001815849
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 85-1408039
Entity Address, Address Line One 790 Remington Boulevard
Entity Address, City or Town Bolingbrook
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60440
City Area Code 630
Local Phone Number 296-2223
Entity Emerging Growth Company false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Common Class A [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Class A Common Stock, $0.0001 par value
Trading Symbol ATIP
Security Exchange Name NYSE
Redeemable Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share [Member]  
Entity Listings [Line Items]  
Title of 12(b) Security Redeemable Warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share
Trading Symbol ATIP WS
Security Exchange Name NYSE