Total Assets by Segment and Reconciliation to Consolidated Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Sep. 27, 2014	Sep. 28, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 231,839	$ 207,000
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	24,795	18,914
Operating Segments | Americas
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	9,352	5,653
Operating Segments | Europe
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	4,631	3,134
Operating Segments | Greater China
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,172	2,943
Operating Segments | Japan
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,106	2,932
Operating Segments | Rest of Asia Pacific
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	908	923
Operating Segments | Retail
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	3,626	3,329
Corporate assets
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 207,044	$ 188,086