A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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- Definition

Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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Amount before tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Comprehensive Income - Change in AOCI by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Sep. 30, 2018	Sep. 29, 2018	Sep. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	$ 107,147	$ 134,047
Total other comprehensive income/(loss)	(223)	(691)
Ending balances	117,892	140,199
Total AOCI
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	(3,454)	(150)
Other comprehensive income/(loss) before reclassifications	(414)
Amounts reclassified from AOCI	132
Tax effect	59
Total other comprehensive income/(loss)	(223)	(691)
Cumulative effect of changes in accounting principles				$ 89	$ 0
Ending balances	(3,588)	$ (841)
Cumulative Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	(1,055)
Other comprehensive income/(loss) before reclassifications	(82)
Amounts reclassified from AOCI	0
Tax effect	4
Total other comprehensive income/(loss)	(78)
Ending balances	(1,133)
Unrealized Gains/Losses on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	810
Other comprehensive income/(loss) before reclassifications	(472)
Amounts reclassified from AOCI	85
Tax effect	95
Total other comprehensive income/(loss)	(292)
Ending balances	518
Unrealized Gains/Losses on Marketable Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balances	(3,209)
Other comprehensive income/(loss) before reclassifications	140
Amounts reclassified from AOCI	47
Tax effect	(40)
Total other comprehensive income/(loss)	147
Ending balances	$ (2,973)
Accounting Standards Update 2016-01 \| Total AOCI
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of changes in accounting principles			$ 89
Accounting Standards Update 2016-01 \| Cumulative Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of changes in accounting principles			0
Accounting Standards Update 2016-01 \| Unrealized Gains/Losses on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of changes in accounting principles			0
Accounting Standards Update 2016-01 \| Unrealized Gains/Losses on Marketable Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Cumulative effect of changes in accounting principles			$ 89