FAIR VALUE (Details 4) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Carrying value and estimated fair value of financial instruments
Long-term debt	$ 1,174.5	$ 871.4
Long-term debt to parent	6.3	7.2
Preferred stock-$100 par value; 1,000,000 shares authorized; 511,882 shares issued and outstanding	51.2	51.2
Carrying Amount
Carrying value and estimated fair value of financial instruments
Long-term debt	1,174.5	871.4
Long-term debt to parent	6.3	7.2
Preferred stock-$100 par value; 1,000,000 shares authorized; 511,882 shares issued and outstanding	51.2	51.2
Fair Value
Carrying value and estimated fair value of financial instruments
Long-term debt	1,176.5	966.2
Long-term debt to parent	7.1	8.2
Preferred stock-$100 par value; 1,000,000 shares authorized; 511,882 shares issued and outstanding	$ 61.4	$ 52.8

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The amount for notes payable (written promise to pay), payable to related parties, which are due after one year (or one business cycle).

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- Definition

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

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