Annual report [Section 13 and 15(d), not S-K Item 405]

PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Multiemployer Plan (Details)

v3.25.0.1
PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Multiemployer Plan (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Multiemployer Plan [Line Items]      
Contributions $ 140 $ 143 $ 115
Steelworkers Pension Trust      
Multiemployer Plan [Line Items]      
Pension Plan EIN 236648508    
Pension Plan Number 499    
Pension Protection Act Zone Status Green Green  
FIP/RP Status Pending/Implemented No    
Contributions $ 117 $ 119 93
Surcharge Imposed No    
Total actuarial liability   6,562  
Market value of assets   $ 6,494  
Funded ratio   0.99  
IAM National Pension Fund's National Pension Plan      
Multiemployer Plan [Line Items]      
Pension Plan EIN 516031295    
Pension Plan Number 002    
Pension Protection Act Zone Status Red Red  
FIP/RP Status Pending/Implemented Implemented    
Contributions $ 22 $ 23 22
Surcharge Imposed Yes    
Other Plans      
Multiemployer Plan [Line Items]      
Contributions $ 1 $ 1 $ 0