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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions		1 Months Ended		12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Dec. 18, 2025 USD ($)	Jan. 31, 2026 USD ($)	Apr. 19, 2022 plaintiff	Dec. 31, 2025 USD ($)	Mar. 31, 2026 USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual				$ 350	$ 110
Loss contingency, excess over the accrued liability recorded					60
Loss contingencies				350	65
Crews v. Rivian Automotive, Inc., et al.
Loss Contingencies [Line Items]
Number of plaintiffs \| plaintiff			3
Corresponding settlement payment	$ 250
Insurance recoveries				17
Loss contingencies				$ 233	45
Payments for legal settlements		$ 183
Crews v. Rivian Automotive, Inc., et al. \| Insurance Companies
Loss Contingencies [Line Items]
Payments for legal settlements		$ 50
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate					$ 170