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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Collaborative Arrangements (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Costs of revenues, excluding depreciation and amortization $ 22,970 $ 24,526 $ 20,442
Collaborative Arrangement, Transaction with Party to Collaborative Arrangement and Third Party      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Costs of revenues, excluding depreciation and amortization $ 632 $ 393