v3.22.4
Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2022
Jan. 31, 2023
Jun. 30, 2022
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-4448    
Entity Registrant Name Baxter International Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 36-0781620    
Entity Address, Address Line One One Baxter Parkway,    
Entity Address, City or Town Deerfield,    
Entity Address, State or Province IL    
Entity Address, Postal Zip Code 60015    
City Area Code 224    
Local Phone Number 948.2000    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 32
Entity Common Stock, Shares Outstanding   504,672,166  
Documents Incorporated by Reference Portions of the registrant’s definitive 2023 proxy statement for use in connection with its Annual Meeting of Stockholders expected to be held on May 2, 2023 are incorporated by reference into Part III of this report.    
Amendment Flag false    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000010456    
NEW YORK STOCK EXCHANGE, INC. | Common stock, $1.00 par value      
Entity Information [Line Items]      
Title of 12(b) Security Common stock, $1.00 par value    
Trading Symbol BAX (NYSE)    
Security Exchange Name NYSE    
NEW YORK STOCK EXCHANGE, INC. | 0.4% Global Notes due 2024      
Entity Information [Line Items]      
Title of 12(b) Security 0.4% Global Notes due 2024    
Trading Symbol BAX 24    
Security Exchange Name NYSE    
NEW YORK STOCK EXCHANGE, INC. | 1.3% Global Notes due 2025      
Entity Information [Line Items]      
Title of 12(b) Security 1.3% Global Notes due 2025    
Trading Symbol BAX 25    
Security Exchange Name NYSE    
NEW YORK STOCK EXCHANGE, INC. | 1.3% Global Notes due 2029      
Entity Information [Line Items]      
Title of 12(b) Security 1.3% Global Notes due 2029    
Trading Symbol BAX 29    
Security Exchange Name NYSE    
CHICAGO STOCK EXCHANGE, INC. | Common stock, $1.00 par value      
Entity Information [Line Items]      
Title of 12(b) Security Common stock, $1.00 par value    
Trading Symbol BAX (NYSE)    
Security Exchange Name CHX