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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION - Reconciliation of Accrued Expenses (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Restructuring Reserve [Roll Forward] |  |  |  |  |
Balance as of beginning of period | $ 104 | $ 0 |  | $ 0 |
Costs incurred | 40 | 170 |  |  |
Cash payments | (18) | (2) |  |  |
Non-cash | (15) | (64) |  |  |
Balance as of end of period | 111 | 104 |  | 111 |
Restructuring and other charges | 25 | 104 | $ 0 | 129 | $ 0
Defined benefit plan |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Termination benefits | 0 |  | $ 0 | 2 | $ 0
Asset Impairments |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Balance as of beginning of period | 0 | 0 |  | 0 |
Costs incurred | 15 | 64 |  |  |
Cash payments | 0 | 0 |  |  |
Non-cash | (15) | (64) |  |  |
Balance as of end of period | 0 | 0 |  | 0 |
Employee Severance |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Balance as of beginning of period | 58 | 0 |  | 0 |
Costs incurred | 23 | 58 |  |  |
Cash payments | (8) | 0 |  |  |
Non-cash | 0 | 0 |  |  |
Balance as of end of period | 73 | 58 |  | 73 |
Other Restructuring |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Balance as of beginning of period | 46 | 0 |  | 0 |
Costs incurred | 2 | 48 |  |  |
Cash payments | (10) | (2) |  |  |
Non-cash | 0 | 0 |  |  |
Balance as of end of period | $ 38 | $ 46 |  | $ 38 |

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