EMPLOYEE BENEFIT PLANS (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity securities
Target asset allocations
Target asset allocations (as a percent)	70.00%
Fixed income securities
Target asset allocations
Target asset allocations (as a percent)	30.00%
Pension Benefits \| Benefit obligations
Weighted average assumptions used
Discount rate	4.92%	4.07%
Rate of compensation increase	4.24%	4.25%
Pension Benefits \| Net periodic benefit costs
Weighted average assumptions used
Discount rate	4.07%	5.10%	5.80%
Expected return on plan assets	8.00%	8.25%	8.25%
Rate of compensation	4.25%	4.25%	4.26%
Other Benefits
Weighted average assumptions used
Expected return on assets assumption for the next fiscal year	8.00%
Effects of a one-percentage-point change in assumed health care cost trend rates
Effect of one-percentage-point increase on total of service and interest cost components of net periodic health care benefit cost	$ 8.2
Effect of one-percentage-point decrease on total of service and interest cost components of net periodic health care benefit cost	(6.5)
Effect of one-percentage-point increase on the health care component of the accumulated benefit obligation	80.6
Effect of one-percentage-point decrease on the health care component of the accumulated benefit obligation	$ (65.5)
Other Benefits \| Benefit obligations
Weighted average assumptions used
Discount rate	4.83%	3.96%
Assumed medical cost trend rate (as a percent)	6.50%	7.00%
Ultimate trend rate (as a percent)	5.00%	5.00%
Year ultimate trend rate is reached	2019	2019
Assumed dental cost trend rate (as a percent)	5.00%	5.00%
Other Benefits \| Net periodic benefit costs
Weighted average assumptions used
Assumed dental cost trend rate (as a percent)	5.00%	5.00%	5.00%
Discount rate	3.96%	4.94%	5.66%
Expected return on plan assets	8.00%	8.25%	8.25%
Other Benefits \| Under age 65 \| Net periodic benefit costs
Weighted average assumptions used
Assumed medical cost trend rate (as a percent)	7.00%	7.00%	7.50%
Ultimate trend rate (as a percent)	5.00%	5.00%	5.00%
Year ultimate trend rate is reached	2019	2016	2016
Other Benefits \| Over age 65 \| Net periodic benefit costs
Weighted average assumptions used
Assumed medical cost trend rate (as a percent)	7.00%	7.50%	8.00%
Ultimate trend rate (as a percent)	5.00%	5.50%	5.50%
Year ultimate trend rate is reached	2019	2016	2016

The assumed dental cost trend rate which is used to determine net periodic benefit cost.

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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 during next fiscal year.

+ References

No definition available.

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- Definition

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

+ References

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-Number 132R

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- Definition

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

+ References

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- Definition

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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- Definition

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

+ References

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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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.

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-Glossary Health Care Cost Trend Rate

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- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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The ultimate trend rate for health care costs.

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Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

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