EMPLOYEE-RELATED BENEFITS - Asset Allocation (Details) - Pension Benefits	Dec. 31, 2020
U.S. equity investments
Pension and other post-retirement costs, net
Target asset allocation	11.00%
Actual asset allocation (as a percent)	11.00%
International equity investments
Pension and other post-retirement costs, net
Target asset allocation	12.00%
Actual asset allocation (as a percent)	12.00%
World equity fund (U.S. and International equity investments)
Pension and other post-retirement costs, net
Target asset allocation	20.00%
Actual asset allocation (as a percent)	20.00%
High yield fixed income investments
Pension and other post-retirement costs, net
Target asset allocation	4.00%
Actual asset allocation (as a percent)	4.00%
Fixed income investments
Pension and other post-retirement costs, net
Target asset allocation	45.00%
Actual asset allocation (as a percent)	43.00%
Cash equivalents
Pension and other post-retirement costs, net
Target asset allocation	0.00%
Actual asset allocation (as a percent)	1.00%
Other
Pension and other post-retirement costs, net
Target asset allocation	8.00%
Actual asset allocation (as a percent)	9.00%

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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