PENSION (Future Service) (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payment, Next Twelve Months	$ 57,264
Expected Future Benefit Payment, Year Two	57,464
Expected Future Benefit Payment, Year Three	58,316
Expected Future Benefit Payment, Year Four	63,341
Expected Future Benefit Payment, Year Five	59,751
Expected Future Benefit Payment, Five Fiscal Years Thereafter	302,264
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payment, Next Twelve Months	55,668
Expected Future Benefit Payment, Year Two	55,872
Expected Future Benefit Payment, Year Three	56,721
Expected Future Benefit Payment, Year Four	61,772
Expected Future Benefit Payment, Year Five	58,203
Expected Future Benefit Payment, Five Fiscal Years Thereafter	295,165
Other Postretirement Benefits Plan [Member] | United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payment, Next Twelve Months	1,596
Expected Future Benefit Payment, Year Two	1,592
Expected Future Benefit Payment, Year Three	1,595
Expected Future Benefit Payment, Year Four	1,569
Expected Future Benefit Payment, Year Five	1,548
Expected Future Benefit Payment, Five Fiscal Years Thereafter	$ 7,099