Segment Information, Geographic Data, and Significant Customers - Summary of Net Long-lived Assets Consisting of Property and Equipment by Region (Details) - USD ($) $ in Millions |
Dec. 31, 2017 |
Jan. 01, 2017 |
|---|---|---|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | $ 931 | $ 713 |
| United States [Member] | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | 828 | 636 |
| Singapore [Member] | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | 54 | 44 |
| United Kingdom [Member] | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | 43 | 28 |
| Other countries [Member] | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Long-lived assets | $ 6 | $ 5 |