LINES OF CREDIT - Other Letters of Credit and Surety Bonds (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Letters of credit	$ 37	$ 38
Surety bonds	$ 134	$ 125

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.

No definition available.

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