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Debt Debt - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 28, 2019 | Aug. 31, 2019 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 28, 2019 | Sep. 29, 2018
Debt Instrument [Line Items] |  |  |  |  |  |
Debt repurchase amount | $ 1,000 |  | $ 1,000 |  | $ 1,000 |
Interest Expense, Debt |  | $ 15 | 72 | $ 72 | 221 | $ 213
Senior Notes Due November 2019 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt repurchase amount | 309 | $ 191 | $ 309 |  | $ 309 |
Interest Expense, Debt | $ 1 |  |  |  |  |
Debt instrument interest rate stated percentage | 4.15% | 4.15% | 4.15% |  | 4.15% |
Senior Notes Due December 2020 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt repurchase amount |  | $ 248 |  |  |  |
Debt instrument interest rate stated percentage |  | 4.00% |  |  |  |
Senior Notes Due May 2021 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt repurchase amount |  | $ 202 |  |  |  |
Debt instrument interest rate stated percentage |  | 3.25% |  |  |  |
Senior Notes Due May 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt repurchase amount |  | $ 50 |  |  |  |
Debt instrument interest rate stated percentage |  | 2.65% |  |  |  |

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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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