Quarterly report pursuant to Section 13 or 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS- USW Labor Agreement (Details)

v3.22.2.2
PENSIONS AND OTHER POSTRETIREMENT BENEFITS- USW Labor Agreement (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
employee
Sep. 30, 2022
USD ($)
employee
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
employee
Sep. 30, 2021
USD ($)
Dec. 31, 2022
USD ($)
Jan. 01, 2023
USD ($)
Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                
Term of labor agreement 47 months 47 months   47 months        
Number of employees covered in labor agreement | employee 2,000 2,000   2,000        
Service multiplier $ 115 $ 115   $ 115        
Forecast                
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                
Service multiplier             $ 126  
Defined Benefit Plan, Increase (Decrease) in Net Periodic Benefit Cost (Credit)           $ 3,000,000    
Net periodic benefit costs (credits)           $ (104,000,000)    
Pension Plan                
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                
Increase (decrease) in funded status of plan due to remeasurement 38,000,000              
Actuarial gains on pension benefit obligations 247,000,000              
Plan amendment gains (losses) (32,000,000)              
Actual plan asset losses $ (177,000,000)              
Discount rate used to measure benefit obligations 5.64% 5.64%   5.64%       2.97%
Net periodic benefit costs (credits)   $ (45,000,000) $ (40,000,000) $ (135,000,000) $ (124,000,000)      
Other Postretirement Benefit Plans, Defined Benefit                
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]                
Increase (decrease) in funded status of plan due to remeasurement $ 81,000,000              
Actuarial gains on pension benefit obligations 76,000,000              
Plan amendment gains (losses) 86,000,000              
Actual plan asset losses $ (81,000,000)              
Discount rate used to measure benefit obligations 5.64% 5.64%   5.64%       2.91%
Net periodic benefit costs (credits)   $ 18,000,000 $ 21,000,000 $ 54,000,000 $ 65,000,000