EMPLOYEE BENEFITS - Schedule of Estimated Future Benefit Payments (Details) $ in Millions	Dec. 31, 2016 USD ($)
Pension Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
2017	$ 284.5
2018	277.0
2019	284.3
2020	290.4
2021	298.9
2022-2026	1,562.9
Other Postretirement Benefit Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
2017	54.8
2018	55.0
2019	55.1
2020	55.4
2021	55.4
2022-2026	$ 270.7

Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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