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Financial Instruments - Cumulative Basis Adjustments for Fair Value Hedges (Details) - USD ($) $ in Millions | Jun. 28, 2020 | Dec. 31, 2019
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Short-term investments [Member] |  |  |
Derivative [Line Items] |  |  |
Carrying Amount of Actively Hedged Assets | [1] | $ 45 | $ 0
Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Active Hedging Relationships, Asset |  | 0 | 0
Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Discontinued Hedging Relationships, Asset |  | 0 | 0
Long-term investments [Member] |  |  |
Derivative [Line Items] |  |  |
Carrying Amount of Actively Hedged Assets | [1] | 0 | 45
Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Active Hedging Relationships, Asset |  | 0 | 0
Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Discontinued Hedging Relationships, Asset |  | 0 | 0
Long-term debt [Member] |  |  |
Derivative [Line Items] |  |  |
Carrying Amount of Actively Hedged Liabilities | [1] | 2,023 | 7,092
Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Active Hedging Relationships, Liability |  | 140 | 266
Cumulative Amount of Fair Value Hedging Adjustment Increase/(Decrease) to Carrying Amount, Discontinued Hedging Relationships, Liability |  | $ 1,181 | $ 690
[1] | Carrying amounts exclude the cumulative amount of fair value hedging adjustments.

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- Definition Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk, remaining after discontinued hedge. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL109999712-113959 + Details
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