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PENSION (Future Service) (Detail) $ in Thousands | Dec. 31, 2017 USD ($)
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Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | $ 47,290
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 50,630
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 51,553
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 52,747
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 52,039
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 274,612
Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | 45,604
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 48,937
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 49,859
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 51,058
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 50,361
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | 266,582
Domestic Plan [Member] | Other Postretirement Benefits Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months | 1,686
Defined Benefit Plan, Expected Future Benefit Payment, Year Two | 1,693
Defined Benefit Plan, Expected Future Benefit Payment, Year Three | 1,694
Defined Benefit Plan, Expected Future Benefit Payment, Year Four | 1,689
Defined Benefit Plan, Expected Future Benefit Payment, Year Five | 1,678
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter | $ 8,030

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