EMPLOYEE BENEFIT PLANS Funded Status Of Plans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits	$ 0	$ 2,377
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at January 1	431,090	382,372
Service cost	13,265	12,191
Interest cost	23,810	22,930
Actuarial (gain) loss	38,946	25,818
Benefits paid	(13,463)	(12,221)
Benefit obligation at December 31	493,648	431,090
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at January 1	433,467	387,411
Actual return on plan assets	9,501	48,277
Employer contributions	0	10,000
Fair value of plan assets at December 31	429,505	433,467
Funded status at December 31	(64,143)	2,377
Pension and Other Postretirement Defined Benefit Plans, Liabilities	(64,144)	0
Defined Benefit Plan, Amounts Recognized in Balance Sheet	$ (64,144)	$ 2,377