PENSION AND OTHER POSTRETIREMENT BENEFITS 10 (Details) (USD $)	12 Months Ended				1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Pension Benefits [Member]	Jan. 31, 2013 Pension Benefits [Member] Pension Contribution [Member]	Dec. 31, 2012 Other Postretirement Benefits [Member]	Dec. 31, 2012 Supplemental Employee Retirement Plans, Defined Benefit [Member]
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]
2013				$ 8,928,000		$ 4,620,000
2014				9,321,000		4,546,000
2015				9,735,000		4,620,000
2016				10,149,000		4,674,000
2017				10,562,000		4,796,000
2018- 2022				67,100,000		25,020,000
Pension Contributions	25,000,000	0	8,000,000	25,000,000	12,700,000
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year						$ 3,600,000	$ 1,300,000