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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] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Term of labor agreement 47 months 47 months Ìý 47 months Ìý Ìý Ìý Ìý
Number of employees covered in labor agreement | employee 2,000 2,000 Ìý 2,000 Ìý Ìý Ìý Ìý
Service multiplier $ 115 $ 115 Ìý $ 115 Ìý Ìý Ìý Ìý
Forecast Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Service multiplier Ìý Ìý Ìý Ìý Ìý Ìý $ 126 Ìý
Defined Benefit Plan, Increase (Decrease) in Net Periodic Benefit Cost (Credit) Ìý Ìý Ìý Ìý Ìý $ 3,000,000 Ìý Ìý
Net periodic benefit costs (credits) Ìý Ìý Ìý Ìý Ìý $ (104,000,000) Ìý Ìý
Pension Plan Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Increase (decrease) in funded status of plan due to remeasurement 38,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Actuarial gains on pension benefit obligations 247,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Plan amendment gains (losses) (32,000,000) Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Actual plan asset losses $ (177,000,000) Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Discount rate used to measure benefit obligations 5.64% 5.64% Ìý 5.64% Ìý Ìý Ìý 2.97%
Net periodic benefit costs (credits) Ìý $ (45,000,000) $ (40,000,000) $ (135,000,000) $ (124,000,000) Ìý Ìý Ìý
Other Postretirement Benefit Plans, Defined Benefit Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Increase (decrease) in funded status of plan due to remeasurement $ 81,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Actuarial gains on pension benefit obligations 76,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Plan amendment gains (losses) 86,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Actual plan asset losses $ (81,000,000) Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Discount rate used to measure benefit obligations 5.64% 5.64% Ìý 5.64% Ìý Ìý Ìý 2.91%
Net periodic benefit costs (credits) Ìý $ 18,000,000 $ 21,000,000 $ 54,000,000 $ 65,000,000 Ìý Ìý Ìý