Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Expected Future Benefit Payments (Details)

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BENEFIT PLANS - Expected Future Benefit Payments (Details) - Pension Benefits
$ in Millions
Dec. 31, 2018
USD ($)
Estimated Future Benefit Payments [Abstract]  
2019 $ 49
2020 49
2021 48
2022 48
2023 48
2024 through 2028 $ 238