Acquisition, Equity-Method Investment and Licensing Arrangements - Valneva SE (Details) - Licensing Agreements [Member] - Valneva SE [Member] - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jun. 28, 2020 |
Sep. 27, 2020 |
Apr. 30, 2020 |
|
| Business Acquisition [Line Items] | |||
| Maximum potential cash payments | $ 308 | ||
| Potential development milestones | 35 | ||
| Potential early commercialization milestones | $ 143 | ||
| Valneva's development cost ownership percentage | 30.00% | ||
| Research and Development Expense [Member] | |||
| Business Acquisition [Line Items] | |||
| Upfront payment for licensing arrangement | $ 130 |