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v3.25.1

Significant Accounting Estimates and Judgements (Details) | 12 Months Ended
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Dec. 31, 2024 D item $ / shares
Significant Accounting Estimates and Judgements |
Issue price per share | $ / shares | $ 18
Trading days for redemption of public warrants | 20
Consecutive trading days for redemption of public warrants | 30
Number of trials for warrants valuation | item | 250,000

X
- Definition The number of trials for warrants valuation. + References No definition available. + Details
Name: | tmc_NumberOfTrialsForWarrantsValuation
Namespace Prefix: | tmc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | tmc_SignificantAccountingEstimatesAndJudgementAbstract
Namespace Prefix: | tmc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The issuance price of additional capital which would trigger an adjustment in the exercise price of the warrant. + References No definition available. + Details
Name: | tmc_WarrantExercisePriceAdjustmentTrigger
Namespace Prefix: | tmc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of consecutive trading days within a specified range when the reported sale price must exceed the specified amount. + References No definition available. + Details
Name: | tmc_WarrantRedemptionMeasurementConsecutiveTradingDaysOverSpecifiedAmount
Namespace Prefix: | tmc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of trading days over which the reported sale price is measured when determining the redemption price. + References No definition available. + Details
Name: | tmc_WarrantRedemptionMeasurementPeriod
Namespace Prefix: | tmc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration