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FINANCIAL INSTRUMENTS (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2016 | May 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Retired in Q1 2016 [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Debt instrument, face amount |  |  |  | $ 200 |  |
Treasury Lock [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Gain (loss) on derivatives |  | $ (1) |  |  |  |
Cash Flow Hedging [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Accumulated net loss from designated or qualifying cash flow hedges |  |  | $ 10 |  | $ 10 |
Net amount of deferred gains and losses on cash flow hedges that is expected to be reclassified within the next 12 months |  |  | $ 3 |  |  |
Cash Flow Hedging [Member] | Treasury Lock [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of interest rate derivatives |  | $ 250 |  |  |  |
Fair Value Hedging [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of interest rate derivatives |  |  |  |  |  | $ 1,200
Derivative asset designated as hedging Instrument fair value on termination | $ 60 |  |  |  |  |
Deferred gain (loss) on discontinuation of interest rate fair value hedge | 54 |  |  |  |  |
Proceeds received from terminated interest rate swaps for accrued interest | $ 6 |  |  |  |  |
Fair Value Hedging [Member] | One-Month LIBOR [Member] | Minimum [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Floating rate |  |  | 2.20% |  |  | 1.40%
Fair Value Hedging [Member] | One-Month LIBOR [Member] | Maximum [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Floating rate |  |  | 3.00% |  |  | 3.60%
Economic Hedges [Member] | Reverse Treasury Locks [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Notional amount of interest rate derivatives |  |  |  | 75 |  |
Economic Hedges [Member] | Reverse Treasury Locks [Member] | Not Designated as Hedging Instrument [Member] | Other Nonoperating Income (Expense) [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Gain on derivative |  |  |  | $ 1 |  |

X
- Definition Total gain or loss, net of tax expense or benefit recognized in accumulated other comprehensive income (loss) resulting from gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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