PENSION AND OTHER POSTRETIREMENT BENEFITS (Plan Assets) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	$ 383,149	$ 372,199
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Pension and other postretirement liabilities	2,670	2,487
Accrued pension and other postretirement benefit costs	232,794	166,591
Pension Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	372,199	350,370
Defined Benefit Plan, Actual Return on Plan Assets	(4,454)	40,967
Defined Benefit Plan Contributions By Employer	40,735	5,466
Defined Benefit Plan, Contributions by Plan Participants	2,424	2,257
Defined Benefit Plan, Benefits Paid	(27,177)	(25,717)
Defined Benefit Plan, Settlements, Plan Assets	(117)	(1,471)
Defined Benefit Plan Change In Plan Assets In Event Of Plan Termination Amount	0	(128)
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(461)	455
Defined Benefit Plan, Fair Value of Plan Assets	383,149	372,199
Defined Benefit Plan, Funded Status of Plan	(213,997)	(149,106)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Pension and other postretirement liabilities	(1,069)	(916)
Accrued pension and other postretirement benefit costs	(212,928)	(148,190)
Defined Benefit Plan, Amounts Recognized in Balance Sheet	(213,997)	(149,106)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	175,524	106,752
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	6,791	7,889
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	182,315	114,641
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Defined Benefit Plan, Amortization of Net Gains (Losses)	9,979	4,948
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	1,200	1,196
Defined Benefit Plan, Accumulated Benefit Obligation	546,635	476,792
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	557,316	497,237
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	516,115	462,416
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	345,640	353,473
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Fair Value of Plan Assets	0
Defined Benefit Plan Contributions By Employer	1,300	1,560
Defined Benefit Plan, Contributions by Plan Participants	381	455
Defined Benefit Plan, Benefits Paid	(1,681)	(2,015)
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Defined Benefit Plan, Funded Status of Plan	(21,467)	(19,972)
Defined Benefit Plan, Amounts Recognized in Balance Sheet [Abstract]
Pension and other postretirement liabilities	(1,601)	(1,571)
Accrued pension and other postretirement benefit costs	(19,866)	(18,401)
Defined Benefit Plan, Amounts Recognized in Balance Sheet	(21,467)	(19,972)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax [Abstract]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	(10,516)	(12,768)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	(6,244)	(6,873)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	(16,760)	(19,641)
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year [Abstract]
Defined Benefit Plan, Amortization of Net Gains (Losses)	(719)	(925)
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	$ (629)	$ (629)