Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994

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- Definition

Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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Hedging Activities (Narrative) (Details) $ in Millions	Dec. 31, 2018 USD ($)	Oct. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Oct. 31, 2012 USD ($) item
Derivative Asset, Notional Amount	$ 14,911		$ 15,718
Cash Flow Hedging [Member] \| Designated as Hedging Instrument [Member]
Derivative Asset, Notional Amount		$ 16
Foreign Exchange Forward [Member] \| Cash Flow Hedging [Member]
Amount expected to be reclassified into earnings within the next 12 months	2
Interest Rate Contracts [Member] \| Designated as Hedging Instrument [Member]
Derivative Asset, Notional Amount			$ 550
Interest Rate Contracts [Member] \| Fair Value Hedging [Member]
Number of Interest Rate Derivatives Held \| item				2
Derivative Asset, Notional Amount				$ 550
Gross Notional Value, Collar Options [Member] \| Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount	2,000
Gross Notional Value Zero-Cost Collars Options [Member] \| Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount	9,100
Gross Notional Value Purchased Put Or Call Options [Member] \| Not Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 2,600