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Segment and Geographic Data - Net Sales by Segment and Industry End Market (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 25, 2020 | Dec. 27, 2019
Segment and Geographic Data |  |
Net sales | $ 3,522 | $ 3,168
Transportation Solutions |  |
Segment and Geographic Data |  |
Net sales | 2,224 | 1,868
Transportation Solutions | Automotive |  |
Segment and Geographic Data |  |
Net sales | 1,629 | 1,405
Transportation Solutions | Commercial transportation |  |
Segment and Geographic Data |  |
Net sales | 331 | 258
Transportation Solutions | Sensors |  |
Segment and Geographic Data |  |
Net sales | 264 | 205
Industrial Solutions |  |
Segment and Geographic Data |  |
Net sales | 873 | 927
Industrial Solutions | Aerospace, defense, oil, and gas |  |
Segment and Geographic Data |  |
Net sales | 250 | 309
Industrial Solutions | Industrial equipment |  |
Segment and Geographic Data |  |
Net sales | 295 | 263
Industrial Solutions | Medical |  |
Segment and Geographic Data |  |
Net sales | 156 | 179
Industrial Solutions | Energy |  |
Segment and Geographic Data |  |
Net sales | 172 | 176
Communications Solutions |  |
Segment and Geographic Data |  |
Net sales | 425 | 373
Communications Solutions | Data and devices |  |
Segment and Geographic Data |  |
Net sales | 234 | 219
Communications Solutions | Appliances |  |
Segment and Geographic Data |  |
Net sales | $ 191 | $ 154

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