Derivatives - Cash Flow Hedges - Gain (Loss) in OCI or Reclassified from AOCI (Details) - Cash flow hedge $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Derivative	$ (26)
Pretax Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	70
Foreign currency forward/option contracts
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Derivative	96
Foreign currency forward/option contracts \| Cost of sales
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	74
Interest rate swap contracts
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Recognized in Other Comprehensive Income on Derivative	(122)
Interest rate swap contracts \| Interest expense.
Derivatives in Cash Flow Hedging Relationships
Pretax Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	$ (4)

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580

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