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Annual report pursuant to Section 13 and 15(d)

PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Contributions) (Details)

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PENSIONS AND OTHER POSTRETIREMENT BENEFITS (Contributions) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions $ 3.7 $ 3.8
Expected employer contributions, next fiscal year $ 3.5 Ìý
Defined Benefit Plan, Funded Percentage 70.00% Ìý
Value of VEBA Trust Assets as a Percentage of the Funding Obligation 0.9 Ìý
Pension Plan [Member] Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions $ 16.4 27.6
Expected employer contributions, next fiscal year 20.2 Ìý
Other Postretirement Benefits Plan [Member] Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions 2.5 3.0
Direct Payments [Member] Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions 3.7 3.8
Expected employer contributions, next fiscal year 3.5 Ìý
Veba Trust [Member] Ìý Ìý
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] Ìý Ìý
Employer contributions 0.0 $ 0.0
Expected employer contributions, next fiscal year $ 0.0 Ìý