Pre-tax Amounts Reclassified from AOCI into Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended
Dec. 26, 2015	Dec. 27, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized (gains)/losses on derivative instruments reclassified from AOCI	$ (511)	$ (663)
Unrealized (gains)/losses on marketable securities reclassified from AOCI	73	(22)
Total amounts reclassified from AOCI	(438)	(685)
Foreign exchange contracts \| Revenue
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized (gains)/losses on derivative instruments reclassified from AOCI	(329)	(449)
Foreign exchange contracts \| Cost of sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized (gains)/losses on derivative instruments reclassified from AOCI	(306)	(313)
Foreign exchange contracts \| Other income/expense, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized (gains)/losses on derivative instruments reclassified from AOCI	120	95
Interest rate contracts \| Other income/expense, net
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized (gains)/losses on derivative instruments reclassified from AOCI	$ 4	$ 4

Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 320
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-Section 50
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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