STOCKHOLDERS' EQUITY - Performance Stock Units Fair Value Assumptions (Detail) - Performance Shares - $ / shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Baxter volatility	31.00%	29.00%	27.00%
Peer group volatility minimum	19.00%	20.00%	23.00%
Peer group volatility maximum	53.00%	52.00%	54.00%
Correlation of returns minimum	0.06	0.12	0.23
Correlation of returns maximum	0.47	0.51	0.48
Risk-free interest rate	3.90%	4.30%	4.60%
Fair value per PSU (in dollars per share)	$ 39	$ 57	$ 30