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EMPLOYEE RETIREMENT PLANS - Benefits Expected to be Paid in Each of the Next Five Years, and in Aggregate for the Five Years Thereafter (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Qualified  
Benefits expected to be paid in each of the next five years, and in aggregate for the five years thereafter  
2020 $ 49
2021 834
2022 5
2023 5
2024 6
2025 - 2029 32
Nonqualified Plan  
Benefits expected to be paid in each of the next five years, and in aggregate for the five years thereafter  
2020 13
2021 12
2022 12
2023 12
2024 12
2025 - 2029 $ 53