The amount of upfront payment based on the agreement.

No definition available.

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- Definition

Represents the amount received from a collaborative arrangement.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of development cost incurred.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of development cost eliminated.

+ References

No definition available.

+ Details

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- Definition

Represents the development costs that have been eliminated.

+ References

No definition available.

+ Details

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- Definition

Represents the duration of the parties' research collaboration agreement.

+ References

No definition available.

+ Details

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- Definition

The percentages on net product sales.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of reimbursement for services performed.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of development cost payable under the collaboration agreement.

+ References

No definition available.

+ Details

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- Definition

The amount of development milestone payable under the research and collaboration agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Represents upcoming potential development milestones payment.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue recognized arising from contract liability from change in timeframe for performance obligation to be satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in estimate of transaction price which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due. Includes, but is not limited to, change in assessment of whether estimate of variable consideration is constrained.

+ References

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- Definition

Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from contract modification which (increases) decreases obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

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License and Collaboration Agreement - Narrative (Details) - USD ($) $ in Millions			12 Months Ended
	Jul. 27, 2021	Jul. 21, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020	May 07, 2019	Jul. 13, 2017
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenue recognized			$ 2.8	$ 14.1	$ 1.6
Original Agreement \| License and Collaboration Agreement \| Maximum \| Phase 2a and 2b costs for PTG-200
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable								$ 20.0
Janssen \| Services performed for IL-23 receptor antagonist compound research costs and other services
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Reimbursement for services performed			17.9
Transaction price			87.5
Janssen \| License and Collaboration Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Increase (decrease) in transaction price			18.6	(27.1)	9.4
Collaboration revenue recorded following the contract modification			27.4		1.6
Revenue recognized				28.6	0.2
Recognized revenue from deferred revenue contract liability					8.0
Janssen \| License and Collaboration Agreement \| Three phase 1 studies of second-generation compounds
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Eligible amount received			7.5
Janssen \| License and Collaboration Agreement \| Additional services
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Collaboration revenue recorded following the contract modification			8.0
Revenue recognized			$ 0.8	1.5
Janssen \| Original Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Increase (decrease) in transaction price				6.4
Transaction price				$ 98.6	112.9
Janssen \| Original Agreement \| License and Collaboration Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Duration of the parties' research collaboration agreement	2 years
Janssen \| Original Agreement \| License and Collaboration Agreement \| Three phase 1 studies of second-generation compounds
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Expense obligations eliminated	$ 5.0
Percentage of development cost eliminated	50.00%
Janssen \| Original Agreement \| License and Collaboration Agreement \| Phase 2a and 2b costs for PTG-200
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost incurred, percentage			20.00%
Janssen \| Original Agreement \| License and Collaboration Agreement \| Phase 2 studies for second-generation products
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			$ 100.0
Percentage of development cost eliminated	20.00%
Milestone payment	$ 25.0							50.0
Janssen \| Original Agreement \| License and Collaboration Agreement \| Phase 2a study evaluating PTG-200 for the treatment of CD
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost incurred, percentage			20.00%
Janssen \| Original Agreement \| License and Collaboration Agreement \| Maximum \| Phase 1 studies of second-generation compounds
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable								20.0
Janssen \| Original Agreement \| License and Collaboration Agreement \| Maximum \| Phase 2 studies for second-generation products
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Expense obligations eliminated	25.0
Janssen \| Original Agreement \| License and Collaboration Agreement \| Maximum \| Phase 2a study evaluating PTG-200 for the treatment of CD
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			$ 25.0
Janssen \| Original Agreement \| Upfront cash payment
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Upfront payment								$ 50.0
Janssen \| Restated Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			7.1
Reimbursement for services performed			8.2
Maximum percentages royalties on net product sales		10.00%
Increase (decrease) in transaction price	$ 8.0		7.9
Transaction price			$ 106.5
Janssen \| Restated Agreement \| Second-generation Oral Interleukin ("IL")-23 Receptor Antagonist Development Compound
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Eligible amount received						$ 5.0
Janssen \| Restated Agreement \| Additional services
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenue recognized					$ 0.0
Janssen \| Restated Agreement \| License and Collaboration Agreement
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Eligible amount received							$ 25.0
Janssen \| Restated Agreement \| License and Collaboration Agreement \| Phase 1 studies of second-generation compounds
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage of development cost eliminated			100.00%
Janssen \| Restated Agreement \| License and Collaboration Agreement \| Phase 2 studies for second-generation products
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Upcoming potential development milestones			$ 25.0
Janssen \| Restated Agreement \| License and Collaboration Agreement \| 3rd patient in the first Phase 2 clinical trial for any second-generation compound for a second indication
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			25.0
Upcoming potential development milestones			$ 10.0
Janssen \| Restated Agreement \| License and Collaboration Agreement \| Phase 2a study evaluating PTG-200 for the treatment of CD
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost incurred, percentage			50.00%
Janssen \| Restated Agreement \| License and Collaboration Agreement \| Dosing of the 3rd patient in a Phase 3 clinical trial for a second-generation compound for any indication
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			$ 15.0
Upcoming potential development milestones			50.0
Janssen \| Restated Agreement \| License and Collaboration Agreement \| Phase 3 clinical trial for a second-generation compound for any indication
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			115.0
Janssen \| Restated Agreement \| License and Collaboration Agreement \| Maximum \| Phase 2a study evaluating PTG-200 for the treatment of CD
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Development cost payable			$ 20.0