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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Reconciliation of Accrued Expenses (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | $ 111 | $ 104 | $ 0 |  | $ 0 |
Costs incurred | 2 | 40 | 170 |  |  |
Cash payments | (21) | (18) | (2) |  |  |
Non-cash |  | (15) | (64) |  |  |
Balance as of end of period | 92 | 111 | 104 |  | 92 |
Restructuring and other charges | 2 | 25 | 104 | $ 0 | 131 | $ 0
Defined benefit plan |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Termination benefits | 0 |  | 2 | $ 0 | 2 | $ 0
Asset Impairments |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | 0 | 0 | 0 |  | 0 |
Costs incurred | 0 |  | 64 |  |  |
Cash payments | 0 | 0 | 0 |  |  |
Non-cash |  | (15) | (64) |  |  |
Balance as of end of period | 0 | 0 | 0 |  | 0 |
Restructuring and other charges |  | 15 |  |  |  |
Employee Severance |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | 73 | 58 | 0 |  | 0 |
Costs incurred | 0 | 23 | 58 |  |  |
Cash payments | (10) | (8) | 0 |  |  |
Non-cash |  | 0 | 0 |  |  |
Balance as of end of period | 63 | 73 | 58 |  | 63 |
Other Restructuring |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Balance as of beginning of period | 38 | 46 | 0 |  | 0 |
Costs incurred | 2 | 2 | 48 |  |  |
Cash payments | (11) | (10) | (2) |  |  |
Non-cash |  | 0 | 0 |  |  |
Balance as of end of period | $ 29 | $ 38 | $ 46 |  | $ 29 |

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