Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT BENEFITS - Estimated Future Benefit Payments (Details)

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PENSION AND OTHER POSTRETIREMENT BENEFITS - Estimated Future Benefit Payments (Details)
$ in Millions
Dec. 31, 2021
USD ($)
Pension Plan  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2022 $ 475
2023 477
2024 451
2025 428
2026 424
2027-2031 1,879
Other Postretirement Benefits Plan  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
2022 180
2023 171
2024 167
2025 163
2026 163
2027-2031 $ 823