Income Taxes (Schedule of Unrecognized Tax Benefits Rollforward) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jan. 02, 2016 |
Jan. 03, 2015 |
Dec. 28, 2013 |
|
| Unrecognized Tax Benefits [Roll Forward] | |||
| Balance at beginning of year | $ 328 | $ 315 | $ 314 |
| Increases related to current year tax positions | 48 | 67 | 74 |
| Increases related to prior year tax positions | 0 | 6 | 33 |
| Increases related to positions assumed from Thoratec | 7 | 0 | 0 |
| Reductions related to prior year tax positions | (24) | (27) | (16) |
| Reductions related to settlements / payments | (16) | (27) | (90) |
| Expiration of the statute of limitations for the assessment of taxes | (5) | (6) | 0 |
| Balance at end of year | $ 338 | $ 328 | $ 315 |