Organization and Summary of Significant Accounting Policies - Narrative - Goodwill, Intangible Assets and Other Long-Lived Assets (Details) $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2017
USD ($)
| |
| Finite-Lived Intangible Assets [Line Items] | |
| Impairment of in-process research and development | $ 5 |
| Cost of Sales [Member] | |
| Finite-Lived Intangible Assets [Line Items] | |
| Impairment of finite-lived intangible assets | $ 18 |