EMPLOYEE BENEFITS - Expected Future Benefit Payments (Details) $ in Millions	Dec. 31, 2018 USD ($)
Qualified and Non-Qualified Plans
Expected benefit payments by fiscal year ended
December 31, 2019	$ 64
December 31, 2020	64
December 31, 2021	65
December 31, 2022	66
December 31, 2023	67
December 31, 2024 - 2028	340
Postretirement Benefit Plan
Expected benefit payments by fiscal year ended
December 31, 2019	1
December 31, 2020	1
December 31, 2021	1
December 31, 2022	1
December 31, 2023	1
December 31, 2024 - 2028	$ 5

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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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