XML 102 R73.htm IDEA: XBRL DOCUMENT v3.20.4
PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS - Estimated Projected Benefit Payments for the Next 10 Years (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Pension  
Defined Benefit Plan Disclosure [Line Items]  
Expected Future Benefit Payments 2021 $ 188
Expected Future Benefit Payments 2022 189
Expected Future Benefit Payments 2023 193
Expected Future Benefit Payments 2024 192
Expected Future Benefit Payments 2025 192
Expected Future Benefit Payments 2026-2030 978
OPEB  
Defined Benefit Plan Disclosure [Line Items]  
Expected Future Benefit Payments 2021 14
Expected Future Benefit Payments 2022 12
Expected Future Benefit Payments 2023 11
Expected Future Benefit Payments 2024 11
Expected Future Benefit Payments 2025 10
Expected Future Benefit Payments 2026-2030 $ 45