FAIR VALUE MEASUREMENTS (Basis of Fair Value Measurements on a Recurring Basis) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	$ 2,059	$ 1,634
Derivative Asset, Fair Value, Gross Asset	632	338
Long-term debt including debt due within one year	17,125	20,604
Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	735	698
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1,324	936
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities 2	245	45
Equity securities	20	40
Total assets at fair value	3,762	3,521
Long-term debt including debt due within one year	17,125	20,604
Total liabilities at fair value	18,060	21,125
Fair Value, Measurements, Recurring | Sadara Chemical Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Guarantees, Fair Value Disclosure	220	0
Fair Value, Measurements, Recurring | Interest rates 6
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	145	44
Fair Value, Measurements, Recurring | Foreign currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	165	113
Derivative Liability, Fair Value, Gross Liability	137	128
Fair Value, Measurements, Recurring | Commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	322	181
Derivative Liability, Fair Value, Gross Liability	294	208
Fair Value, Measurements, Recurring | Interest rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	284	185
Fair Value, Measurements, Recurring | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	735	698
Fair Value, Measurements, Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1,324	936
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities 2	0	0
Equity securities	20	40
Total assets at fair value	79	76
Long-term debt including debt due within one year	0	0
Total liabilities at fair value	37	7
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Sadara Chemical Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Guarantees, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Interest rates 6
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Foreign currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Gross Liability	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	15	8
Derivative Liability, Fair Value, Gross Liability	37	7
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Interest rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	44	28
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities 2	245	45
Equity securities	0	0
Total assets at fair value	3,683	3,445
Long-term debt including debt due within one year	17,125	20,604
Total liabilities at fair value	17,803	21,118
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Sadara Chemical Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Guarantees, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rates 6
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	145	44
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	165	113
Derivative Liability, Fair Value, Gross Liability	137	128
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	307	173
Derivative Liability, Fair Value, Gross Liability	257	201
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	284	185
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	735	698
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1,280	908
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities 2	0
Equity securities	0
Total assets at fair value	0
Long-term debt including debt due within one year	0
Total liabilities at fair value	220
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Sadara Chemical Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Guarantees, Fair Value Disclosure	220
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rates 6
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign currency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative Liability, Fair Value, Gross Liability	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Commodities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Derivative Liability, Fair Value, Gross Liability	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rates
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability, Fair Value, Gross Liability	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Government debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0
Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	317	980
Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	317	980
Held-to-maturity Securities [Member] | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	489	484
Money Market Funds [Member] | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Items (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Money Market Funds [Member] | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	489	$ 484
Money Market Funds [Member] | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 0