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Amounts receivable and prepaid expenses - Additional information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Mar. 31, 2025	Mar. 28, 2024
Amounts receivable and prepaid expenses
Royalties receivable, collectability period (in days)	60 days
Kensington
Amounts receivable and prepaid expenses
Consideration to be received		$ 3,750	$ 6,750

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- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	tfpm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Represents the collectability period of royalties receivables.

+ References

No definition available.

+ Details

Name:	tfpm_RoyaltiesReceivablesCollectabilityPeriod
Namespace Prefix:	tfpm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Definition

The amount of consideration to be received in form of shares as part of settlement agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tfpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: