Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS - Levels Within the Fair Value Hierarchy for Pension Plan Assets (Details)

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FAIR VALUE MEASUREMENTS - Levels Within the Fair Value Hierarchy for Pension Plan Assets (Details) - Pension Plans, Defined Benefit - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets $ 7,158 $ 8,905 $ 8,639
Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 635 505  
Equity Securities, US based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 1,188 2,431  
Equity Securities, International based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 939 1,706  
Government bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 1,238 677  
Corporate bonds and debt securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 499 1,023  
Mutual, pooled and commingled funds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 767 850  
Hedge funds/limited partnerships      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 936 720  
Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 424 389  
Derivative financial instruments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets (14) (9)  
Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 546 613  
Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 2,349 4,581  
Level 1 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 146 479  
Level 1 | Equity Securities, US based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 1,157 2,382  
Level 1 | Equity Securities, International based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 920 1,684  
Level 1 | Government bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 91 0  
Level 1 | Corporate bonds and debt securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 1 | Mutual, pooled and commingled funds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 35 36  
Level 1 | Hedge funds/limited partnerships      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 1 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 1 | Derivative financial instruments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 1 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 2,316 2,015  
Level 2 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 489 26  
Level 2 | Equity Securities, US based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 7 22  
Level 2 | Equity Securities, International based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 16 22  
Level 2 | Government bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 1,147 677  
Level 2 | Corporate bonds and debt securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 469 994  
Level 2 | Mutual, pooled and commingled funds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 202 283  
Level 2 | Hedge funds/limited partnerships      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 2 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 2 | Derivative financial instruments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets (14) (9)  
Level 2 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 357 339 $ 337
Level 3 | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3 | Equity Securities, US based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 24 27  
Level 3 | Equity Securities, International based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 3 0  
Level 3 | Government bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3 | Corporate bonds and debt securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 30 29  
Level 3 | Mutual, pooled and commingled funds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3 | Hedge funds/limited partnerships      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3 | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3 | Derivative financial instruments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Level 3 | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 300 283  
Fair Value Measured at Net Asset Value Per Share      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 2,136 1,970  
Fair Value Measured at Net Asset Value Per Share | Cash and cash equivalents      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Fair Value Measured at Net Asset Value Per Share | Equity Securities, US based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Fair Value Measured at Net Asset Value Per Share | Equity Securities, International based companies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Fair Value Measured at Net Asset Value Per Share | Government bonds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Fair Value Measured at Net Asset Value Per Share | Corporate bonds and debt securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Fair Value Measured at Net Asset Value Per Share | Mutual, pooled and commingled funds      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 530 531  
Fair Value Measured at Net Asset Value Per Share | Hedge funds/limited partnerships      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 936 720  
Fair Value Measured at Net Asset Value Per Share | Real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 424 389  
Fair Value Measured at Net Asset Value Per Share | Derivative financial instruments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets 0 0  
Fair Value Measured at Net Asset Value Per Share | Other      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Defined Benefit Plan, Plan Assets $ 246 $ 330