EMPLOYEE BENEFIT PLANS, Weighted-Average Assumptions (Details)	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Pension Benefits [Member]
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	5.75%	6.25%	6.25%
Expected return on plan assets (in hundredths)	8.25%	8.50%	8.50%
Rate of compensation increase (in hundredths)	4.00%	4.00%	4.00%
Weighted average assumptions used to determine benefit obligation [Abstract]
Discount rate (in hundredths)	5.75%	6.25%	6.25%
Rate of compensation increase (in hundredths)	4.00%	4.00%	4.00%
Other Post-retirement Benefits [Member]
Weighted average assumptions used to determine net periodic benefit cost [Abstract]
Discount rate (in hundredths)	5.75%	6.25%	6.25%
Rate of compensation increase (in hundredths)	4.00%	4.00%	4.00%
Weighted average assumptions used to determine benefit obligation [Abstract]
Discount rate (in hundredths)	5.75%	6.25%	6.25%
Rate of compensation increase (in hundredths)	4.00%	4.00%	4.00%
Assumed health care cost trend rates [Abstract]
Initial health care cost trend rate (in hundredths)	10.00%	9.00%	9.00%
Ultimate rate (in hundredths)	5.00%	5.00%	5.00%
Year ultimate rate is reached (in hundredths)	2016	2014	2013
Non-qualified Benefit Plans [Member]
Weighted average assumptions used to determine benefit obligation [Abstract]
Discount rate (in hundredths)	4.50%

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The interest rate used to adjust for the time value of money for the plan.

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- Definition

Expected rate of compensation increases (for pay-related plans).

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The interest rate used to adjust for the time value of money.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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-Glossary Expected Long-Term Rate of Return on Plan Assets

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-Topic 715

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Expected rate of compensation increases (for pay-related plans).

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

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-Glossary Health Care Cost Trend Rate

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The ultimate trend rate for health care costs.

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- Definition

The year when the ultimate health care cost trend rate is expected to be reached.

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