Segment Information Other Reconciling Items (Details) (USD $) In Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 25, 2011 |
Jun. 26, 2011 |
Mar. 27, 2011 |
Dec. 26, 2010 |
Sep. 26, 2010 |
Jun. 27, 2010 |
Mar. 28, 2010 |
Dec. 27, 2009 |
Sep. 25, 2011 |
Sep. 26, 2010 |
Sep. 27, 2009 |
|
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | $ 4,117 | $ 3,623 | $ 3,870 | $ 3,348 | $ 2,952 | $ 2,700 | $ 2,661 | $ 2,668 | $ 14,957 | $ 10,982 | $ 10,387 |
| EBT | 5,687 | 4,493 | 2,403 | ||||||||
Elmination of intersegment revenues [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | (3) | (10) | (15) | ||||||||
Other Nonreportable Segments [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | 23 | 10 | 21 | ||||||||
Unallocated cost of equipment and services revenue [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | (210) | (42) | (40) | ||||||||
Unallocated research and development expenses [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | (553) | (401) | (372) | ||||||||
Unallocated selling, general and administrative expenses [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | (506) | (336) | (293) | ||||||||
Unallocated other operating expenses [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | 0 | 0 | (1,013) | ||||||||
Unallocated investment income (loss),nNet [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | 756 | 767 | (141) | ||||||||
Other nonreportable segments [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | (324) | (224) | (206) | ||||||||
Intersegment eliminations [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| EBT | (1) | (3) | (7) | ||||||||
Significant reconciling items [Member] |
|||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | 20 | 0 | 6 | ||||||||
| EBT | $ (838) | $ (239) | $ (2,072) | ||||||||