Company-wide Realignments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Reversal of non-cash-stock-based compensation expense		$ 0.4
Restructuring costs		4.1
Tetraphase Pharmaceuticals, Inc.
Restructuring Cost And Reserve [Line Items]
Restructuring costs		$ 3.1
Payments for restructuring	$ 2.5
Accrued Payroll and Related Expenses \| Tetraphase Pharmaceuticals, Inc.
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 0.6

Amount of noncash expense (reversal of expense) for employee benefits and share-based payment arrangement. Includes, but is not limited to, pension, other postretirement, postemployment and termination benefits.

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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