Income Taxes (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|---|
Jun. 26, 2016 |
Dec. 27, 2015 |
Mar. 29, 2015 |
Dec. 28, 2014 |
Jun. 28, 2015 |
Sep. 25, 2016 |
Sep. 27, 2015 |
|
| Income Taxes [Line Items] | |||||||
| Effective income tax rate | 15.00% | 19.00% | |||||
| Tax benefits from foreign income taxed at rates lower than rates in the United States | 14.00% | ||||||
| Tax benefit from a worthless stock deduction on a domestic subsidiary | $ 101 | ||||||
| Tax benefit recognized in period related to prior period attributable to federal research and development tax credit | $ 79 | $ 101 | |||||
| Resolution of governmental investigation, Amount | $ 975 | $ 975 | |||||
| Tax benefit as a result of a favorable tax audit settlement | $ 61 | ||||||
| Unrecognized Tax Benefits | $ 210 | $ 40 | |||||
| Scenario, Forecast [Member] | |||||||
| Income Taxes [Line Items] | |||||||
| Effective income tax rate | 17.00% | ||||||
| Tax benefits from foreign income taxed at rates lower than rates in the United States | 15.00% | ||||||