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v3.19.3.a.u2

Comprehensive Income - Change in AOCI by Component (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 28, 2019 | Dec. 29, 2018 | Sep. 29, 2019 | Sep. 30, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | $ 90,488 | $ 107,147 |  |
Total other comprehensive income/(loss) | 30 | (223) |  |
Ending balances | 89,531 | 117,892 |  |
Total AOCI |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | (584) | (3,454) |  |
Other comprehensive income/(loss) before reclassifications | 552 |  |  |
Amounts reclassified from AOCI | (502) |  |  |
Tax effect | (20) |  |  |
Total other comprehensive income/(loss) | 30 | (223) |  |
Cumulative effects of changes in accounting principles |  |  | $ 136 | $ 89
Ending balances | (418) | $ (3,588) |  |
Cumulative Foreign Currency Translation |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | (1,463) |  |  |
Other comprehensive income/(loss) before reclassifications | 207 |  |  |
Amounts reclassified from AOCI | 0 |  |  |
Tax effect | (5) |  |  |
Total other comprehensive income/(loss) | 202 |  |  |
Cumulative effects of changes in accounting principles |  |  | 0 |
Ending balances | (1,261) |  |  |
Unrealized Gains/Losses on Derivative Instruments |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | 172 |  |  |
Other comprehensive income/(loss) before reclassifications | 182 |  |  |
Amounts reclassified from AOCI | (489) |  |  |
Tax effect | 20 |  |  |
Total other comprehensive income/(loss) | (287) |  |  |
Ending balances | 21 |  |  |
Unrealized Gains/Losses on Marketable Securities |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | 707 |  |  |
Other comprehensive income/(loss) before reclassifications | 163 |  |  |
Amounts reclassified from AOCI | (13) |  |  |
Tax effect | (35) |  |  |
Total other comprehensive income/(loss) | 115 |  |  |
Cumulative effects of changes in accounting principles |  |  | 0 |
Ending balances | $ 822 |  |  |
Accounting Standards Update 2017-12 | Total AOCI |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Cumulative effects of changes in accounting principles |  |  | 136 |
Accounting Standards Update 2017-12 | Unrealized Gains/Losses on Derivative Instruments |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Cumulative effects of changes in accounting principles |  |  | $ 136 |

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