Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 4) - Fair Value of Plan Assets

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PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 4) - Fair Value of Plan Assets - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
UNITED STATES      
Pension and other postretirement benefits      
Fair value of plan assets $ 3,706 $ 3,826 $ 3,828
Pending Trade Purchases, Sales (2) (16)  
Accrued Investment Income Receivable 12 10  
UNITED STATES | U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets 168 73  
UNITED STATES | Non-U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets 31 36  
UNITED STATES | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 105 157  
UNITED STATES | Domestic Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 600 603  
UNITED STATES | Foreign Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 36 49  
UNITED STATES | Asset-backed Securities      
Pension and other postretirement benefits      
Fair value of plan assets 13 8  
UNITED STATES | Net cash equivalents      
Pension and other postretirement benefits      
Fair value of plan assets 388 467  
UNITED STATES | Private markets and real assets (2)      
Pension and other postretirement benefits      
Fair value of plan assets 500 604  
UNITED STATES | Fair Value, Inputs, Level 1      
Pension and other postretirement benefits      
Fair value of plan assets 587 576  
UNITED STATES | Fair Value, Inputs, Level 1 | U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets 168 73  
UNITED STATES | Fair Value, Inputs, Level 1 | Non-U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets 31 36  
UNITED STATES | Fair Value, Inputs, Level 1 | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 0 0  
UNITED STATES | Fair Value, Inputs, Level 1 | Domestic Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 0 0  
UNITED STATES | Fair Value, Inputs, Level 1 | Foreign Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 0 0  
UNITED STATES | Fair Value, Inputs, Level 1 | Asset-backed Securities      
Pension and other postretirement benefits      
Fair value of plan assets 0 0  
UNITED STATES | Fair Value, Inputs, Level 1 | Net cash equivalents      
Pension and other postretirement benefits      
Fair value of plan assets 388 467  
UNITED STATES | Significant other observable inputs Level 2      
Pension and other postretirement benefits      
Fair value of plan assets 754 817  
UNITED STATES | Significant other observable inputs Level 2 | U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets   0  
UNITED STATES | Significant other observable inputs Level 2 | Non-U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets   0  
UNITED STATES | Significant other observable inputs Level 2 | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 105 157  
UNITED STATES | Significant other observable inputs Level 2 | Domestic Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 600 603  
UNITED STATES | Significant other observable inputs Level 2 | Foreign Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 36 49  
UNITED STATES | Significant other observable inputs Level 2 | Asset-backed Securities      
Pension and other postretirement benefits      
Fair value of plan assets 13 8  
UNITED STATES | Significant other observable inputs Level 2 | Net cash equivalents      
Pension and other postretirement benefits      
Fair value of plan assets 0 0  
UNITED STATES | Fair Value, Inputs, Level 3      
Pension and other postretirement benefits      
Fair value of plan assets 500 604 641
UNITED STATES | Fair Value, Inputs, Level 3 | Real Assets      
Pension and other postretirement benefits      
Fair value of plan assets 59 67 82
UNITED STATES | Fair Value, Inputs, Level 3 | Private markets and real assets (2)      
Pension and other postretirement benefits      
Fair value of plan assets 500 604  
UNITED STATES | Fair Value, Inputs, Level 1, 2 and 3      
Pension and other postretirement benefits      
Fair value of plan assets 1,841 1,997  
UNITED STATES | Fair Value Measured at Net Asset Value Per Share      
Pension and other postretirement benefits      
Fair value of plan assets 1,855 1,835  
UNITED STATES | Fair Value Measured at Net Asset Value Per Share | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 235 257  
UNITED STATES | Fair Value Measured at Net Asset Value Per Share | Asset-backed Securities      
Pension and other postretirement benefits      
Fair value of plan assets 327 307  
UNITED STATES | Fair Value Measured at Net Asset Value Per Share | Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 912 915  
UNITED STATES | Fair Value Measured at Net Asset Value Per Share | Global Equities      
Pension and other postretirement benefits      
Fair value of plan assets 260 222  
UNITED STATES | Fair Value Measured at Net Asset Value Per Share | Real Assets      
Pension and other postretirement benefits      
Fair value of plan assets 121 134  
UNITED KINGDOM      
Pension and other postretirement benefits      
Fair value of plan assets 1,468 1,720 1,670
Pending Trade Purchases, Sales 1 1  
Accrued Investment Income Receivable 2 2  
UNITED KINGDOM | U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets   12  
UNITED KINGDOM | Non-U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets   8  
UNITED KINGDOM | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 204 232  
UNITED KINGDOM | Domestic Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 32 30  
UNITED KINGDOM | Foreign Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 93 95  
UNITED KINGDOM | Net cash equivalents      
Pension and other postretirement benefits      
Fair value of plan assets 25 35  
UNITED KINGDOM | Insurance      
Pension and other postretirement benefits      
Fair value of plan assets 383 436  
UNITED KINGDOM | Private markets and real assets (2)      
Pension and other postretirement benefits      
Fair value of plan assets 102 103  
UNITED KINGDOM | Fair Value, Inputs, Level 1      
Pension and other postretirement benefits      
Fair value of plan assets 11 37  
UNITED KINGDOM | Fair Value, Inputs, Level 1 | U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets   12  
UNITED KINGDOM | Fair Value, Inputs, Level 1 | Non-U.S. Equity      
Pension and other postretirement benefits      
Fair value of plan assets   8  
UNITED KINGDOM | Fair Value, Inputs, Level 1 | Net cash equivalents      
Pension and other postretirement benefits      
Fair value of plan assets 11 17  
UNITED KINGDOM | Significant other observable inputs Level 2      
Pension and other postretirement benefits      
Fair value of plan assets 343 375  
UNITED KINGDOM | Significant other observable inputs Level 2 | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 204 232  
UNITED KINGDOM | Significant other observable inputs Level 2 | Domestic Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 32 30  
UNITED KINGDOM | Significant other observable inputs Level 2 | Foreign Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 93 95  
UNITED KINGDOM | Significant other observable inputs Level 2 | Net cash equivalents      
Pension and other postretirement benefits      
Fair value of plan assets 14 18  
UNITED KINGDOM | Fair Value, Inputs, Level 3      
Pension and other postretirement benefits      
Fair value of plan assets 485 539 818
UNITED KINGDOM | Fair Value, Inputs, Level 3 | Real Assets      
Pension and other postretirement benefits      
Fair value of plan assets 6 7 8
UNITED KINGDOM | Fair Value, Inputs, Level 3 | Insurance      
Pension and other postretirement benefits      
Fair value of plan assets 383 436 $ 428
UNITED KINGDOM | Fair Value, Inputs, Level 3 | Private markets and real assets (2)      
Pension and other postretirement benefits      
Fair value of plan assets 102 103  
UNITED KINGDOM | Fair Value, Inputs, Level 1, 2 and 3      
Pension and other postretirement benefits      
Fair value of plan assets 839 951  
UNITED KINGDOM | Fair Value Measured at Net Asset Value Per Share      
Pension and other postretirement benefits      
Fair value of plan assets 626 766  
UNITED KINGDOM | Fair Value Measured at Net Asset Value Per Share | Government debt      
Pension and other postretirement benefits      
Fair value of plan assets 434 572  
UNITED KINGDOM | Fair Value Measured at Net Asset Value Per Share | Asset-backed Securities      
Pension and other postretirement benefits      
Fair value of plan assets 92 117  
UNITED KINGDOM | Fair Value Measured at Net Asset Value Per Share | Corporate Debt Securities      
Pension and other postretirement benefits      
Fair value of plan assets 96 71  
UNITED KINGDOM | Fair Value Measured at Net Asset Value Per Share | Reinsurance      
Pension and other postretirement benefits      
Fair value of plan assets $ 4 $ 6