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DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT - Fair Values of Derivative Assets and Liabilities by Hedge Type (Detail) - Fair Value Hedging [Member] - Interest Expense [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fixed-Rate Debt and Capital Leases
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 57	$ 84
Interest rate contracts
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (57)	$ (84)

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109977999&loc=d3e76258-113986

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+ References

No definition available.

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