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DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Fair Values of Derivative Assets and Liabilities by Hedge Type (Detail) - Interest Expense [Member] - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Fixed-Rate Debt and Capital Leases |  |
Derivatives, Fair Value [Line Items] |  |
Amount of Gain (Loss) Recognized in Income | $ 84 | $ 71
Interest rate contracts |  |
Derivatives, Fair Value [Line Items] |  |
Amount of Gain (Loss) Recognized in Income | $ (84) | $ (71)

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- Definition Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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