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FAIR VALUE MEASUREMENTS (Summary of Recurring Measured Fair Values) (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale | $ 2,031 |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 250 | $ 218
Debt Securities, Available-for-sale, Amortized Cost | 2,248 |
Equity Securities, FV-NI, Current | 11 | 14
Long-term Debt |  | (16,208)
Long Term Debt, Accumulated Gross Unrealized Gain, Before Tax |  | 1,487
Long Term Debt, Accumulated Gross Unrealized Loss, Before Tax |  | (484)
Long Term Debt, Accumulated Fair Value Adjustment | 29 | 9
Derivative, Amount of Hedged Item | 5,255 | 5,129
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Equity Securities, Amortized Cost Basis | 4 | 4
Equity Securities, Accumulated Gross Unrealized Gain, Before Tax | 7 | 10
Equity Securities, Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Commodity Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liabilities, Accumulated Gross Unrealized Gain, Before Tax | 0 | 0
Derivative Liabilities, Accumulated Gross Unrealized Loss, Before Tax | (2) | (1)
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax | 8 | 4
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 18 | 18
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (1) | (1)
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Long-term Debt | (16,434) | (16,208)
Long Term Debt, Accumulated Gross Unrealized Gain, Before Tax | 1,520 | 1,487
Long Term Debt, Accumulated Gross Unrealized Loss, Before Tax | (462) | (484)
Available-for-sale Debt Securities, Amortized Cost Basis, Current | 393 | 453
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, Current, before Tax | 0 | 0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, Current, before Tax | (53) | (70)
Fair Value, Inputs, Level 2 [Member] | Held-to-maturity Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 114 | 96
Cash Equivalents, Accumulated Gross Unrealized Gain, Before Tax | 0 | 0
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Money Market Funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, at Carrying Value | 567 | 1,164
Cash Equivalents, Accumulated Gross Unrealized Gain, Before Tax | 0 | 0
Cash Equivalents, Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liabilities, Accumulated Gross Unrealized Gain, Before Tax | 0 | 0
Derivative Liabilities, Accumulated Gross Unrealized Loss, Before Tax | (38) | (47)
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax | 53 | 20
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liabilities, Accumulated Gross Unrealized Gain, Before Tax | 0 | 0
Derivative Liabilities, Accumulated Gross Unrealized Loss, Before Tax | (328) | (142)
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax | 81 | 107
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liabilities, Accumulated Gross Unrealized Gain, Before Tax | 0 | 0
Derivative Liabilities, Accumulated Gross Unrealized Loss, Before Tax | (80) | (64)
Derivative Assets (Liabilities), Accumulated Gross Unrealized Gain, Before Tax | 108 | 87
Derivative Assets (Liabilities), Accumulated Gross Unrealized Loss, Before Tax | 0 | 0
Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 1,107 | 1,103
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 13 | 13
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (115) | (123)
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 923 | 954
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 6 | 6
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (85) | (88)
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 200 | 200
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax | (35) | (49)
Fair Value, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets at fair value | 3,313 | 3,908
Total liabilities at fair value | (15,973) | (15,614)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Equity Securities, FV-NI, Current | 11 | 14
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commodity Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 8 | 4
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (2) | (1)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale | 17 | 17
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale, Current | 340 | 383
Long-term debt including debt due within one year 6 | 15,376 | 15,205
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Held-to-maturity Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, Fair Value | 114 | 96
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Held-to-maturity Securities | Cash and cash equivalents |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, Fair Value | 97 | 96
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Held-to-maturity Securities | Other Current Assets [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, Fair Value | 17 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Money Market Funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash Equivalents, Fair Value | 567 | 1,164
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 53 | 20
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (38) | (47)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 81 | 107
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (328) | (142)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement | 108 | 87
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | (80) | (64)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury and Government [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale | 1,005 | 993
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale | 844 | 872
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member] | Private Market Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets at fair value | 87 | 90
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member] | Real Estate [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total assets at fair value | 14 | 15
Fair Value, Recurring [Member] | Fair Value Measured at Net Asset Value Per Share [Member] | Private Market Securities and Real Estate [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments | 80 | 81
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Sadara Chemical Company [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Guarantees, Fair Value Disclosure | (149) | (155)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Securities, Available-for-sale | $ 165 | $ 151

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