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Financial Instruments (Details) € in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 29, 2019 USD ($) | Mar. 30, 2018 USD ($) | Mar. 29, 2019 USD ($) | Mar. 30, 2018 USD ($) | Sep. 28, 2018 USD ($) | Sep. 25, 2015 EUR (€)
Cash flow hedges | Cross-currency swap contracts |  |  |  |  |  |
Financial Instruments |  |  |  |  |  |
Notional amount | € |  |  |  |  |  | € 1,000
Interest paid in foreign currency, fixed interest rate |  |  |  |  |  | 3.50%
Interest received in U.S. dollars, weighted-average fixed interest rate |  |  |  |  |  | 5.33%
Fair Value of Liability Positions | $ 30 |  | $ 30 |  | $ 100 |
Gains (losses) recorded in other comprehensive income (loss) | 13 | $ (22) | 32 | $ (32) |  |
Gains (losses) excluded from the hedging relationship | 21 | (31) | 38 | (50) |  |
Net investment hedges | Intercompany loans and external borrowings |  |  |  |  |  |
Financial Instruments |  |  |  |  |  |
Notional amount of non derivative instruments |  |  | 3,415 |  | $ 4,064 |
Foreign currency exchange gains (losses) | 36 | $ (79) | 112 | $ (145) |  |
Net investment hedges | Cross-currency swap contracts |  |  |  |  |  |
Financial Instruments |  |  |  |  |  |
Notional amount | $ 1,901 |  | $ 1,901 |  |  |
Interest paid in foreign currency, fixed interest rate | 0.00% |  | 0.00% |  |  |
Interest received in U.S. dollars, weighted-average fixed interest rate | 3.00% |  | 3.00% |  |  |
Foreign currency exchange gains (losses) | $ 42 |  | $ 37 |  |  |

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