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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Apr. 01, 2018 | Dec. 30, 2018
Derivative [Line Items] |  |  |
Available-for-sale Securities, Equity Securities | $ 830 |  | $ 511
Accumulated other comprehensive income on derivatives, after tax | $ (401) |  |
Reclassification of foreign exchange contracts into earnings, period | next 12 months |  |
Maximum length of time for hedge exposure | 18 months |  |
Unrealized gains on equity investments | $ 0 | $ 0 |
Weighted average interest rate on non-current debt | 3.19% |  |
Excess of the estimated fair value over the carrying value of debt |  |  | 300
Foreign exchange contracts |  |  |
Derivative [Line Items] |  |  |
Collateral Already Posted, Aggregate Fair Value | $ 60 |  |
Derivative notional amounts outstanding | 44,000 |  | 41,100
Cross currency interest rate swaps |  |  |
Derivative [Line Items] |  |  |
Derivative notional amounts outstanding | 11,300 |  | 7,300
Interest Rate Contract |  |  |
Derivative [Line Items] |  |  |
Derivative Liability, Noncurrent | 2 |  | 3
Derivative notional amounts outstanding | 500 |  | 500
Equity Securities |  |  |
Derivative [Line Items] |  |  |
Available-for-sale Securities, Equity Securities | 830 |  | $ 511
Equity Investments without readily determinable value | Equity Securities |  |  |
Derivative [Line Items] |  |  |
Equity, Fair Value Adjustment, Impairment Loss | (11) |  |
Changes in fair value, changes in observable prices | $ 15 |  |

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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 Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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