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FAIR VALUE MEASUREMENTS (Basis of Fair Value Measurements on a Recurring Basis) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Collateral Already Posted, Aggregate Fair Value $ 6us-gaap_CollateralAlreadyPostedAggregateFairValue $ 29us-gaap_CollateralAlreadyPostedAggregateFairValue
Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
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[5]
[1] Cash collateral amounts represent the estimated net settlement amount when applying netting and set-off rights included in master netting arrangements between the Company and its counterparties and the payable or receivable for cash collateral held or placed with the same counterparty.
[2] Treasury Bills and money market funds included in "Cash and cash equivalents" in the consolidated balance sheets and held at amortized cost, which approximates fair value.
[3] Included in “Accounts and notes receivable – Other” in the consolidated balance sheets. See Note 9 for additional information on transfers of financial assets.
[4] See Note 6 for information on fair value measurements of long-term debt.
[5] The Company’s investments in equity and debt securities are primarily classified as available-for-sale and are included in “Other investments” in the consolidated balance sheets.
[6] U.S. Treasury obligations, U.S. agency obligations, agency mortgage-backed securities and other municipalities’ obligations.
[7] See Note 6 for the classification of derivatives in the consolidated balance sheets.