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VARIABLE INTEREST ENTITIES (Details) $ in Millions		1 Months Ended		12 Months Ended
VARIABLE INTEREST ENTITIES (Details) $ in Millions	Nov. 30, 2024 segment chiefExecutiveOfficer director	Nov. 30, 2025 USD ($)	Nov. 30, 2024 USD ($) co-CEO chiefExecutiveOfficer director	Dec. 31, 2025 USD ($) director board_seat	Dec. 31, 2024 USD ($)
Variable Interest Entity [Line Items]
Equity interest (as percent)				50.00%
Funding of interest			$ 92
Development services fees payable (as percent)			0.25
Total assets				$ 14,864	$ 15,410
Liabilities				$ 10,270	8,848
Proceeds from funding of 50% interest in Rivian and Volkswagen Group Technologies, LLC		$ 112
Mind Robotics, Inc.
Variable Interest Entity [Line Items]
Investment owned, implied fair value		$ 128
Number of board seats \| board_seat				4
Number of board members appointed \| director				1
Mind Robotics, Inc. \| Eclipse Ventures
Variable Interest Entity [Line Items]
Number of board members appointed \| director				1
Rivian and Volkswagen Group Technologies, LLC
Variable Interest Entity [Line Items]
Number of co-CEOs appointed \| co-CEO			1
Total assets				$ 800	250
Liabilities				570	$ 155
Number of board members appointed \| segment	2
Rivian and Volkswagen Group Technologies, LLC \| Volkswagen Group
Variable Interest Entity [Line Items]
Number of co-CEOs appointed \| co-CEO			1
Number of board members appointed \| segment	2
Mind Robotics, Inc.
Variable Interest Entity [Line Items]
Total assets				115
Liabilities				$ 0
Mind Robotics, Inc.
Variable Interest Entity [Line Items]
Equity interest (as percent)				46.50%
Ownership percentage, parent		53.50%
Volkswagen Group Technologies
Variable Interest Entity [Line Items]
Development services fees payable (as percent)			0.75
Development services fees payable			$ 100
Rivian and VW Group Technology, LLC
Variable Interest Entity [Line Items]
Number of directors \| director	4		4
Number of chief executive officer \| chiefExecutiveOfficer	2		2