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Financial Instruments and Risk Management - Effect on Consolidated Statements of Income of Derivative Instruments (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative | $ (3) | $ (39)
Gain (loss) reclassified from OCI into earnings | (79) | 1
Foreign Exchange Forward Contracts [Member] | Cost of Sales [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative | (1) | (18)
Gain (loss) reclassified from OCI into earnings | (36) | (2)
Foreign Exchange Forward Contracts [Member] | Selling, General and Administrative [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative |  | (1)
Gain (loss) reclassified from OCI into earnings | (4) | (1)
Foreign Exchange Forward Contracts [Member] | Research and Development [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative | (1) | (6)
Gain (loss) reclassified from OCI into earnings | (15) | (2)
Currency Collars [Member] | Cost of Sales [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative | (1) | (9)
Gain (loss) reclassified from OCI into earnings | (15) | 6
Currency Collars [Member] | Selling, General and Administrative [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative |  | (1)
Gain (loss) reclassified from OCI into earnings | (2) |
Currency Collars [Member] | Research and Development [Member] | Cash Flow Hedging [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gain (loss) deferred in OCI on derivative |  | $ (4)
Gain (loss) reclassified from OCI into earnings | $ (7) |

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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624177-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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