v3.26.1
PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Fair Value of Pension Plan Assets (Details) - Pension Benefits - USD ($)
$ in Millions
Dec. 31, 2025
Aug. 07, 2025
Aug. 06, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value $ 2,542 $ 2,454 $ 2,369 $ 2,352 $ 2,507
Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 1,551     1,668  
Cash and cash equivalents | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 79     (60)  
U.S. treasury securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 88     140  
Government-related securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 118     117  
Corporate bonds | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 988     1,138  
Mortgage-backed and asset-backed securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 81     156  
Exchange Traded Fund (ETF) | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 4        
U.S. large capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 54     43  
U.S. small capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 61     67  
Non-U.S. large capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 36     25  
Non-U.S. small capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value       2  
Exchange Traded Fund (ETF) | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 32     32  
Other | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 10     8  
Level 1 | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 340     309  
Level 1 | Cash and cash equivalents | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 65     0  
Level 1 | U.S. treasury securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 88     140  
Level 1 | Government-related securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 1 | Corporate bonds | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 1 | Mortgage-backed and asset-backed securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 1 | Exchange Traded Fund (ETF) | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 4        
Level 1 | U.S. large capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 54     43  
Level 1 | U.S. small capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 61     67  
Level 1 | Non-U.S. large capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 36     25  
Level 1 | Non-U.S. small capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value       2  
Level 1 | Exchange Traded Fund (ETF) | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 32     32  
Level 1 | Other | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 2 | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 1,211     1,359  
Level 2 | Cash and cash equivalents | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 14     (60)  
Level 2 | U.S. treasury securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 2 | Government-related securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 118     117  
Level 2 | Corporate bonds | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 988     1,138  
Level 2 | Mortgage-backed and asset-backed securities | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 81     156  
Level 2 | Exchange Traded Fund (ETF) | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0        
Level 2 | U.S. large capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 2 | U.S. small capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 2 | Non-U.S. large capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 2 | Non-U.S. small capitalization | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value       0  
Level 2 | Exchange Traded Fund (ETF) | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 0     0  
Level 2 | Other | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 10     8  
Net Asset Value | Common collective funds | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 772     626  
Net Asset Value | Limited partnerships | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 5     11  
Net Asset Value | Mutual funds | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value 214     47  
Level 3 | Fair Value, Recurring          
Defined Benefit Plan Disclosure [Line Items]          
Investments, at fair value $ 0     $ 0