v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Amounts Reclassification from AOCI to Net Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income (loss) from discontinued operations, net of tax $ (9) $ (31) $ (7) $ 31
Income tax expense (benefit) (23) (11) (34) 56
Net income (loss) attributable to Baxter stockholders 126 91 111 217
Other (income) expense, net 5 0 (1) 3
Cost of sales (1,928) (1,819) (3,738) (3,583)
Amounts reclassified from AOCI        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net income (loss) attributable to Baxter stockholders (3) 2 (6) (109)
Amounts reclassified from AOCI | CTA        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income (loss) from discontinued operations, net of tax   0   (126)
Income tax expense (benefit)   0   0
Net income (loss) attributable to Baxter stockholders   0   (126)
Amounts reclassified from AOCI | Pension and OPEB items        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income (loss) from discontinued operations, net of tax   0   14
Income tax expense (benefit) 0 (1) 1 (2)
Net income (loss) attributable to Baxter stockholders (2) 2 (4) 15
Other (income) expense, net (2) 3 (5) 6
Income (loss), before tax   3   20
Less: Tax effect on pension settlement from Kidney Care separation   0   (3)
Amounts reclassified from AOCI | Gains (losses) on hedging activities        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income tax expense (benefit) 1 0 1 (1)
Net income (loss) attributable to Baxter stockholders (1) 0 (2) 2
Income (loss), before tax   0   3
Amounts reclassified from AOCI | Gains (losses) on hedging activities | Foreign exchange contracts        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of sales   2   6
Amounts reclassified from AOCI | Gains (losses) on hedging activities | Interest rate contracts        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Cost of sales $ (2)   $ (3)  
Interest expense, net   $ (2)   $ (3)