DEBT (Details) - USD ($)	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Proceeds from borrowings	$ 935,000,000	$ 0
Repayments of debt	832,000,000	$ 2,000,000
Secured Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Proceeds from borrowings	935,000,000
Repayments of debt	830,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility capacity	$ 750,000,000
Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate in excess of LIBOR	1.125%
Revolving Credit Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Credit facility capacity	$ 150,000,000
Secured Receivables Credit Facility [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Credit facility capacity	$ 100,000,000

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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