LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (DETAILS) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 35us-gaap_RepaymentsOfLongTermDebt	$ 37us-gaap_RepaymentsOfLongTermDebt
Total	768us-gaap_LongTermDebt		803us-gaap_LongTermDebt
Less current portion	118us-gaap_LongTermDebtCurrent		117us-gaap_LongTermDebtCurrent
Long-term debt, less current portion	650us-gaap_LongTermDebtNoncurrent		686us-gaap_LongTermDebtNoncurrent
Weighted-average fixed-interest rate	5.70%		5.70%
Weighted-average variable-interest rate	1.60%		1.60%
Debt payments	35us-gaap_DebtInstrumentPeriodicPayment
Fixed-rate notes payable due through 2024 [Member]
Debt Instrument [Line Items]
Total	587		614
Variable-rate notes payable due through 2025 [Member]
Debt Instrument [Line Items]
Total	$ 181		$ 189

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Amount of the required periodic payments including both interest and principal payments.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Glossary Financing Activities

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