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FAIR VALUE OF FINANCIAL INSTRUMENTS - Estimated Fair Values and Carrying Values of Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
FAIR VALUE OF FINANCIAL INSTRUMENTS [Line Items]
Long-term debt	$ 4,891	$ 4,291
Fair Value, Inputs, Level 2
FAIR VALUE OF FINANCIAL INSTRUMENTS [Line Items]
Long-term debt, fair value	$ 5,683	$ 5,106

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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