FAIR VALUE MEASUREMENTS (Summary of Recurring Measured Fair Values) (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Equity Securities, FV-NI, Current | $ 16 | $ 20 |
Debt Securities, Available-for-sale | 1,946 | 2,059 |
Long-term debt including debt due within one year 6 | 15,320 | 17,125 |
US Treasury and Government [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale | 675 | 735 |
Corporate Debt Securities [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale | 1,271 | 1,324 |
Fair Value, Inputs, Level 2 [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 | 1,115 | 632 |
Fair Value, Recurring [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Marketable securities | 242 | 245 |
Equity Securities, FV-NI, Current | 16 | 20 |
Total assets at fair value | 4,276 | 3,762 |
Long-term debt including debt due within one year 6 | 15,320 | 17,125 |
Total liabilities at fair value | 16,478 | 18,060 |
Fair Value, Recurring [Member] | Sadara Chemical Company [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Guarantees, Fair Value Disclosure | 215 | 220 |
Fair Value, Recurring [Member] | Held-to-maturity Securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Cash equivalents 1 | 377 | 317 |
Fair Value, Recurring [Member] | Money Market Funds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Cash equivalents 1 | 580 | 489 |
Fair Value, Recurring [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 | 270 | 145 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 256 | 284 |
Fair Value, Recurring [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 | 266 | 165 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 266 | 137 |
Fair Value, Recurring [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 | 579 | 322 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 421 | 294 |
Fair Value, Recurring [Member] | US Treasury and Government [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale | 675 | 735 |
Fair Value, Recurring [Member] | Corporate Debt Securities [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale | 1,271 | 1,324 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Marketable securities | 0 | 0 |
Equity Securities, FV-NI, Current | 16 | 20 |
Total assets at fair value | 66 | 79 |
Long-term debt including debt due within one year 6 | 0 | 0 |
Total liabilities at fair value | 45 | 37 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Sadara Chemical Company [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Guarantees, Fair Value Disclosure | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Held-to-maturity Securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Cash equivalents 1 | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Cash equivalents 1 | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [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 | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [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 | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
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 | 13 | 15 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 45 | 37 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury and Government [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale | 0 | 0 |
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 | 37 | 44 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Marketable securities | 242 | 245 |
Equity Securities, FV-NI, Current | 0 | 0 |
Total assets at fair value | 4,210 | 3,683 |
Long-term debt including debt due within one year 6 | 15,320 | 17,125 |
Total liabilities at fair value | 16,218 | 17,803 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Sadara Chemical Company [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Guarantees, Fair Value Disclosure | 0 | 0 |
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 1 | 377 | 317 |
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 1 | 580 | 489 |
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 | 270 | 145 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 256 | 284 |
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 | 266 | 165 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 266 | 137 |
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 | 566 | 307 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 376 | 257 |
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 | 675 | 735 |
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 | 1,234 | 1,280 |
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 | 138 | 106 |
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 | 24 | 22 |
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 | 59 | |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Marketable securities | 0 | 0 |
Equity Securities, FV-NI, Current | 0 | 0 |
Total assets at fair value | 0 | 0 |
Long-term debt including debt due within one year 6 | 0 | 0 |
Total liabilities at fair value | 215 | 220 |
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 | 215 | 220 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Held-to-maturity Securities | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Cash equivalents 1 | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Money Market Funds | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Cash equivalents 1 | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [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 | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [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 | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [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 | 0 | 0 |
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement | 0 | 0 |
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury and Government [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale | 0 | 0 |
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 | $ 0 | $ 0 |