Summary Information by Operating Segment (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 26, 2016 |
Mar. 28, 2015 |
Mar. 26, 2016 |
Mar. 28, 2015 |
|
| Segment Reporting Information [Line Items] | ||||
| Net sales | $ 50,557 | $ 58,010 | $ 126,429 | $ 132,609 |
| Operating income | 13,987 | 18,278 | 38,158 | 42,524 |
| Americas | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 19,096 | 21,316 | 48,421 | 51,882 |
| Operating income | 6,116 | 7,186 | 16,134 | 17,887 |
| Europe | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 11,535 | 12,204 | 29,467 | 29,418 |
| Operating income | 3,602 | 4,112 | 9,381 | 9,994 |
| Greater China | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 12,486 | 16,823 | 30,859 | 32,967 |
| Operating income | 4,818 | 6,714 | 12,394 | 13,080 |
| Japan | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 4,281 | 3,457 | 9,075 | 8,905 |
| Operating income | 1,930 | 1,699 | 4,170 | 4,187 |
| Rest of Asia Pacific | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 3,159 | 4,210 | 8,607 | 9,437 |
| Operating income | $ 1,095 | $ 1,600 | $ 3,127 | $ 3,449 |