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COVER - shares
 9 Months Ended
Sep. 30, 2025
Oct. 27, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 1-11442  
Entity Registrant Name CHART INDUSTRIES, INC.  
Entity Incorporation, State DE  
Entity Tax Identification Number 34-1712937  
Street Address 8665 New Trails Drive, Suite 100  
Entity City or Town The Woodlands  
Entity State or Province TX  
Entity Postal Zip Code 77381  
City Area Code 281  
Local Phone Number 364-8700  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   44,952,953
Amendment Flag false  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Entity Central Index Key 0000892553  
Current Fiscal Year End Date --12-31  
Common Stock    
Document Information [Line Items]    
Title of each class Common Stock, par value $0.01  
Trading Symbol(s) GTLS  
Name of each exchange on which registered NYSE  
Convertible preferred stock    
Document Information [Line Items]    
Title of each class Depositary shares, each representing 1/20th interest in a share of 6.75% Series B Mandatory Convertible Preferred Stock, par value $0.01  
Trading Symbol(s) GTLS.PRB  
Name of each exchange on which registered NYSE