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ACQUISITIONS AND DIVESTITURE OF BUSINESSES - Narrative (Details) $ in Millions |  |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 23, 2026 USD ($) | Aug. 06, 2025 USD ($) | Apr. 01, 2025 USD ($) installment | Jun. 30, 2026 USD ($) employee | Dec. 31, 2025 USD ($) | Dec. 31, 2025 USD ($) | Feb. 28, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | May 31, 2024 | Apr. 23, 2023
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash purchase price, net of cash received |  |  |  |  |  | $ 1,490 |  | $ 50 | $ 0 |  |
Jiangsu Huineng Electric Co. Ltd. |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (as a percent) |  |  |  |  |  |  |  |  |  |  | 49.00%
NordicEPOD AS |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest acquired (as a percent) |  |  |  |  |  |  |  |  |  | 49.00% |
Fibrebond Corporation |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash purchase price, net of cash received |  |  | $ 1,430 |  |  |  |  |  |  |  |
Acquired entity, prior year sales |  |  |  |  |  |  | $ 378 |  |  |  |
Employee transaction and retention awards amount |  |  | $ 240 |  |  |  |  |  |  |  |
Number of installments | installment |  |  | 6 |  |  |  |  |  |  |  |
Operating profit of acquiree since acquisition date |  |  |  |  | $ 156 |  |  |  |  |  |
Revenue of acquiree since acquisition date |  |  |  |  | $ 474 |  |  |  |  |  |
Fibrebond Corporation | Customer relationships |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Adjusted preliminary estimated fair value |  |  | $ 410 |  |  |  |  |  |  |  |
Useful life of intangible assets acquired |  |  | 17 years |  |  |  |  |  |  |  |
Fibrebond Corporation | Technology |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Adjusted preliminary estimated fair value |  |  | $ 171 |  |  |  |  |  |  |  |
Useful life of intangible assets acquired |  |  | 9 years |  |  |  |  |  |  |  |
Fibrebond Corporation | Trademarks |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Adjusted preliminary estimated fair value |  |  | $ 74 |  |  |  |  |  |  |  |
Useful life of intangible assets acquired |  |  | 17 years |  |  |  |  |  |  |  |
Fibrebond Corporation | Backlog Intangible Assets |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Adjusted preliminary estimated fair value |  |  | $ 60 |  |  |  |  |  |  |  |
Useful life of intangible assets acquired |  |  | 2 years |  |  |  |  |  |  |  |
Fibrebond Corporation | Cost of products sold |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Employee compensation expense |  |  |  |  |  | 51 |  |  |  |  |
Fibrebond Corporation | Selling, General and Administrative Expenses |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Employee compensation expense |  |  |  |  |  | 16 |  |  |  |  |
Fibrebond Corporation | Other Expense |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Employee compensation expense |  |  |  |  |  | 15 |  |  |  |  |
Resilient Power Systems Inc. |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash purchase price, net of cash received |  | $ 55 |  |  |  |  |  |  |  |  |
Total consideration for acquisition |  | 86 |  |  |  |  |  |  |  |  |
Contingent consideration expected to be paid |  | 31 |  |  |  |  |  |  |  |  |
Maximum potential payments based on future revenue performance |  | 45 |  |  |  |  |  |  |  |  |
Employee incentives, maximum payout |  | $ 50 |  |  |  | 38 |  |  |  |  |
Business acquisition, recognized liability assumed, employee incentives, term |  | 3 years |  |  |  |  |  |  |  |  |
Resilient Power Systems Inc. | Selling, General and Administrative Expenses |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business acquisition, employee incentives expense |  |  |  |  |  | $ 10 |  |  |  |  |
Boyd Thermal | Forecast |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash purchase price, net of cash received |  |  |  | $ 9,500 |  |  |  |  |  |  |
Number of employees | employee |  |  |  | 5,000 |  |  |  |  |  |  |
Ultra PCS Limited | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Business Combination [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash purchase price, net of cash received | $ 1,530 |  |  |  |  |  |  |  |  |  |

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