DERIVATIVES - Narrative (Details) $ in Millions	6 Months Ended
Jun. 30, 2017 USD ($)
Derivative [Line Items]
Net gain (pre-tax) on derivatives expected to be reclassified in next 12 months	$ 1
Derivative liabilities
Derivative [Line Items]
Increase (decrease) in derivative liabilities	(500)
Derivative assets
Derivative [Line Items]
Increase (decrease) in derivative assets	$ (219)

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.

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- Definition

The increase (decrease) during the period in the carrying value of derivative instruments reported as assets that are due to be disposed of within one year (or the normal operating cycle, if longer).

+ References

No definition available.

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- Definition

The increase (decrease) during the period in the carrying value of derivative instruments reported as liabilities that are due to be disposed of within one year (or the normal operating cycle, if longer).

+ References

No definition available.

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve 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

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