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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Additional) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Jun. 30, 2020
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Contribution, Percentage, Maximum | 7.00% |  |
Defined Contribution Plan, Cost | $ 6.0 | $ 5.4 |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 11.9 |  |
Forecast [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount |  |  | $ 18.0

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- Definition Defined Contribution Plan, Employer Contribution, Percentage, Maximum + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Details
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