COMMON EQUITY (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Changes to issued common stock
Common stock issued, balance at beginning of the period	78,287,906	78,287,906	77,781,685
Shares issued - Stock-based compensation	972,718		204,331
Shares issued - Stock Investment Plan	298,532		149,470
Shares issued - Employee Stock Ownership Plan	248,724		105,845
Shares issued - Rabbi trust Shares	111,296		48,788
Restricted stock shares cancelled			(2,213)
Common stock issued, balance at end of the period	79,919,176	78,287,906	78,287,906
Value of stock issuance	$ 79.8	$ 0	$ 22.2

Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

Number of shares issued during the period as a result of an employee stock purchase plan.

Number of shares related to Restricted Stock Award forfeited during the period.

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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