Contingencies (Details) $ in Millions |
6 Months Ended | |
|---|---|---|
|
Feb. 05, 2019
USD ($)
|
Jan. 31, 2019 |
|
| Contingencies (Details) [Line Items] | ||
| Number Of Pending Cases | 7 | |
| Roche [Member] | Subsequent Event [Member] | ||
| Contingencies (Details) [Line Items] | ||
| Litigation Settlement, Amount Awarded from Other Party | $ 21 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Number of pending cases. No definition available.
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| X | ||||||||||
- Definition Amount awarded from other party in judgment or settlement of litigation. No definition available.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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