Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Plan Assets (Details)

v3.22.0.1
PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Plan Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category $ 5,606 $ 5,332 $ 749
Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 812 783 260
Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 2,416 2,431  
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 362 331  
Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 747 807  
Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 209 221  
Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 904 670 $ 212
Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 42 38  
Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 1,539 1,424  
Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 199 193  
U.S. equities | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 1,932 1,950  
U.S. equities | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 129 119  
U.S. equities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 1,157 1,163  
U.S. equities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 26 26  
U.S. equities | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. equities | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. equities | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. equities | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. equities | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 775 787  
U.S. equities | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 103 93  
Global equities | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 734 810  
Global equities | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 54 55  
Global equities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 617 615  
Global equities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 6 6  
Global equities | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Global equities | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Global equities | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Global equities | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Global equities | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 117 195  
Global equities | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 48 49  
U.S. government securities | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 500 476  
U.S. government securities | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 191 156  
U.S. government securities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 140 141  
U.S. government securities | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 111 62  
U.S. government securities | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 310 295  
U.S. government securities | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 80 94  
U.S. government securities | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. government securities | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. government securities | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 50 40  
U.S. government securities | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. corporate bonds | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 1,376 1,281  
U.S. corporate bonds | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 348 364  
U.S. corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 502 512  
U.S. corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 219 237  
U.S. corporate bonds | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 371 466  
U.S. corporate bonds | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 129 127  
U.S. corporate bonds | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. corporate bonds | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
U.S. corporate bonds | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 503 303  
U.S. corporate bonds | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 66 46  
Non U.S. and other bonds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 66 46  
Non U.S. and other bonds | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Hedge funds | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 125 118  
Hedge funds | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 15 14  
Hedge funds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Hedge funds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Hedge funds | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Hedge funds | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Hedge funds | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 125 118  
Hedge funds | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 15 14  
Hedge funds | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Hedge funds | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Private equity | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 151 114  
Private equity | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 3  
Private equity | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Private equity | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Private equity | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Private equity | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Private equity | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 151 114  
Private equity | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 3  
Private equity | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Private equity | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 315 264  
Non U.S. and other bonds | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 10 7  
Non U.S. and other bonds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 315 264  
Non U.S. and other bonds | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 10 7  
Non U.S. and other bonds | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Non U.S. and other bonds | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Real estate | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 313 174  
Real estate | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 17 14  
Real estate | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Real estate | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Real estate | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Real estate | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Real estate | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 313 174  
Real estate | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 17 14  
Real estate | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Real estate | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 94 99  
Absolute return fixed income | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 48 51  
Absolute return fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Significant  Other Observable Inputs (Level 2) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Significant  Other Observable Inputs (Level 2) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Significant Unobservable Inputs (Level 3) | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Significant Unobservable Inputs (Level 3) | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 0 0  
Absolute return fixed income | Investments Measured at Net Asset Value | Pension Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category 94 99  
Absolute return fixed income | Investments Measured at Net Asset Value | Other Postretirement Benefits Plan      
Defined Benefit Plan, Information about Plan Assets [Abstract]      
Fair value of pension assets by asset category $ 48 $ 51