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Fair Value Measurements - Summary of Derivative Activity (Details) - USD ($) $ in Millions | 3 Months Ended | 24 Months Ended |
--- | --- | --- | ---
Apr. 01, 2018 | Apr. 02, 2017 | Apr. 01, 2018 | Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax | $ 623 | $ 395 |  |
Foreign exchange contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Collateral Already Posted, Aggregate Fair Value | 32 |  | $ 32 |
Derivative, Notional Amount | 35,300 |  | 35,300 | $ 34,500
Cross currency interest rate swaps |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivative, Notional Amount | 2,300 |  | 2,300 | $ 2,300
Designated as Hedging Instrument |  |  |  |
Summary of designated derivatives |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | (164) | (224) |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | (178) | (179) |  |
Gain/ (Loss) recognized in Other income/expense | 17 | (11) |  |
Designated as Hedging Instrument | Foreign exchange contracts | Sales to customers |  |  |  |
Summary of designated derivatives |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 31 | (13) |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | 29 | (33) |  |
Gain/ (Loss) recognized in Other income/expense | 0 | 0 |  |
Designated as Hedging Instrument | Foreign exchange contracts | Cost of products sold |  |  |  |
Summary of designated derivatives |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 3 | (97) |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | 2 | (31) |  |
Gain/ (Loss) recognized in Other income/expense | 12 | (17) |  |
Designated as Hedging Instrument | Foreign exchange contracts | Research and development expense |  |  |  |
Summary of designated derivatives |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | (237) | (109) |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | (238) | (102) |  |
Gain/ (Loss) recognized in Other income/expense | 0 | 5 |  |
Designated as Hedging Instrument | Foreign exchange contracts | Other (income) expense, net |  |  |  |
Summary of designated derivatives |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | (18) | (33) |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | (11) | (35) |  |
Gain/ (Loss) recognized in Other income/expense | 5 | 1 |  |
Designated as Hedging Instrument | Cross currency interest rate swaps | Interest (income)/Interest expense, net |  |  |  |
Summary of designated derivatives |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 57 | 28 |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | 40 | 22 |  |
Gain/ (Loss) recognized in Other income/expense | 0 | $ 0 |  |
Other Comprehensive Income (Loss) |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax | $ (150) |  | $ (372) |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References 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 + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624258-113959 + Details
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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959 + Details
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