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Commitments and Contingencies - Additional Information (Detail) $ in Millions | 2 Months Ended | 6 Months Ended | 32 Months Ended |  |
--- | --- | --- | --- | --- | ---
May 31, 2021 PutativeClassAction | Jun. 30, 2024 USD ($) | Apr. 03, 2024 ShareholderDerivative | Dec. 31, 2023 USD ($) | Oct. 17, 2023 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |  |
Operating lease liability |  | $ 73.9 |  |  |
Outstanding non-cancelable purchase obligations |  | 19.7 |  |  |
Number of complaints filed | 5 |  | 7 |  |
Litigation settlement amount |  |  |  | $ 28.5 | $ 28.5
Manufacture and Supply of Roxadustat [Member] |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
Outstanding non-cancelable purchase obligations |  | 0.8 |  |  |
Manufacture and Supply of Pamrevlumab [Member] |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
Outstanding non-cancelable purchase obligations |  | 11.2 |  |  |
Other Purchases [Member] |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
Outstanding non-cancelable purchase obligations |  | 7.6 |  |  |
Research and Preclinical Stage Development Programs [Member] |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |
Maximum future milestone payments |  | $ 697.9 |  |  |

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