Other Disclosures - Contingent liabilities (Details) - Aditech - USD ($) $ in Millions |
1 Months Ended | 12 Months Ended |
|---|---|---|
May 31, 2017 |
Dec. 31, 2017 |
|
| Contingent liabilities | ||
| Obligation payable | $ 25 | |
| Addendum | ||
| Contingent liabilities | ||
| Percentage due of non refundable fee | 2.00% | |
| Obligation payable | $ 25 | |
| Contingent liability paid | $ 25 | |
| Exclusive license | ||
| Contingent liabilities | ||
| Percentage Royalty Due Contingent Liability | 2.00% | |
| Co-exclusive license | ||
| Contingent liabilities | ||
| Percentage Royalty Due Contingent Liability | 20.00% | |
| Co-exclusive rights to develop | ||
| Contingent liabilities | ||
| Percentage Royalty Due Contingent Liability | 2.00% |