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Fair Value Measurements - Summary of Derivative Activity (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 01, 2018 | Jul. 02, 2017 | Jul. 01, 2018 | Jul. 02, 2017 | Dec. 31, 2017
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | $ 306 | $ (268) | $ 156 | $ (378) |
Other (income) expense |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) reclassified from Accumulated OCI into income | 0 | 0 | 0 | 0 |
Interest Rate Contract [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Notional Amount | 1,100 |  | 1,100 |  | $ 1,100
Foreign exchange contracts |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Collateral Already Posted, Aggregate Fair Value | 126 |  | 126 |  |
Derivative, Notional Amount | 37,000 |  | 37,000 |  | 34,500
Cross currency interest rate swaps |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative, Notional Amount | 5,300 |  | 5,300 |  | $ 2,300
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 37 | 0 | 37 | 0 |
Fair Value Hedging | Interest Rate Contract [Member] | Sales to customers |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Interest Rate Contract [Member] | Cost of products sold |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Interest Rate Contract [Member] | Research and Development Expense |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Interest Rate Contract [Member] | Investment Income (Expense) |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments |  |  |  | (1) |
Fair Value Hedging | Interest Rate Contract [Member] | Other (income) expense |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Interest Rate Contract [Member] | Interest (income)/Interest expense, net |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 5 | 5 | 10 |  |
Fair Value Hedging | Cross currency interest rate swaps | Sales to customers |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 0 | 0 | 0 | 0 |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Fair Value Hedging | Cross currency interest rate swaps | Cost of products sold |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 0 | 0 | 0 | 0 |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Fair Value Hedging | Cross currency interest rate swaps | Research and Development Expense |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 0 | 0 | 0 | 0 |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Fair Value Hedging | Cross currency interest rate swaps | Other (income) expense |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 0 | 0 | 0 | 0 |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Fair Value Hedging | Cross currency interest rate swaps | Interest (income)/Interest expense, net |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net | 2 | 0 | 2 | 0 |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 2 | 0 | 2 | 0 |
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Contract [Member] | Sales to customers |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Contract [Member] | Cost of products sold |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Contract [Member] | Research and Development Expense |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Contract [Member] | Investment Income (Expense) |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments |  |  |  | 1 |
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Contract [Member] | Other (income) expense |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | 0 | 0 | 0 | 0 |
Fair Value Hedging | Designated as Hedging Instrument | Interest Rate Contract [Member] | Interest (income)/Interest expense, net |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments | (5) | (5) | (10) |  |
Cash Flow Hedging | Foreign exchange contracts | Sales to customers |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | (49) | 36 | (18) | 22 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 17 | (6) | 46 | (39) |
Cash Flow Hedging | Foreign exchange contracts | Cost of products sold |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | (57) | 218 | (54) | 121 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 76 | (68) | 78 | (99) |
Cash Flow Hedging | Foreign exchange contracts | Research and Development Expense |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 21 | (19) | (216) | (128) |
Gain/ (Loss) reclassified from Accumulated OCI into income | (14) | 1 | (252) | (101) |
Cash Flow Hedging | Foreign exchange contracts | Other (income) expense |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 3 | (12) | (15) | (44) |
Gain/ (Loss) reclassified from Accumulated OCI into income | (10) | (2) | (21) | (37) |
Cash Flow Hedging | Foreign exchange contracts | Interest (income)/Interest expense, net |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 0 | 0 | 0 | 0 |
Cash Flow Hedging | Cross currency interest rate swaps | Sales to customers |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 0 | 0 | 0 | 0 |
Cash Flow Hedging | Cross currency interest rate swaps | Cost of products sold |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 0 |  | 0 | 0 |
Cash Flow Hedging | Cross currency interest rate swaps | Research and Development Expense |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 0 | 0 | 0 | 0 |
Cash Flow Hedging | Cross currency interest rate swaps | Other (income) expense |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 0 | 0 | 0 | 0 |
Gain/ (Loss) reclassified from Accumulated OCI into income | 0 | 0 | 0 | 0 |
Cash Flow Hedging | Cross currency interest rate swaps | Interest (income)/Interest expense, net |  |  |  |  |
Summary of designated derivatives |  |  |  |  |
Gain/ (Loss) recognized in Accumulated OCI | 19 | (69) | 76 | (41) |
Gain/ (Loss) reclassified from Accumulated OCI into income | $ 32 | $ (65) | $ 72 | $ (43) |

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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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