EMPLOYEE BENEFITS (Target Asset Allocation) (Details)	12 Months Ended
	Dec. 31, 2011
Equity Investments [Member] | U.S. [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, equity investments (in hundredths)	4.00%
Equity Investments [Member] | International [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, equity investments (in hundredths)	43.00%
Equity Investments [Member] | Emerging Markets Equity [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, equity investments (in hundredths)	7.00%
Equity Investments [Member] | Total [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, equity investments (in hundredths)	54.00%
Fixed Income [Member] | U.S. [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, fixed income (in hundredths)	18.00%
Fixed Income [Member] | International [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, fixed income (in hundredths)	5.00%
Fixed Income [Member] | Emerging Markets Equity [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, fixed income (in hundredths)	3.00%
Fixed Income [Member] | High Yield [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, fixed income (in hundredths)	5.00%
Fixed Income [Member] | Inflation Protection [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, fixed income (in hundredths)	4.00%
Fixed Income [Member] | Total [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, fixed income (in hundredths)	35.00%
Alternative Investments [Member] | Private [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, alternative investments (in hundredths)	5.00%
Alternative Investments [Member] | Private Real Estate [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, alternative investments (in hundredths)	3.00%
Alternative Investments [Member] | Real Estate Trusts [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, alternative investments (in hundredths)	3.00%
Alternative Investments [Member] | Total [Member]
Target asset allocation [Line Items]
Defined benefit plan, target allocation percentage of assets, alternative investments (in hundredths)	11.00%