Number of vessels redelivered.

No definition available.

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- Definition

The incremental borrowing rate (IBR) is the interest rate a lessee would have to pay to borrow funds to finance an asset similar to the lease's ROU asset in value, over a similar term and in a similar economic environment.

+ References

No definition available.

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- Definition

Amount of lease cost recognized by lessee for lease contract.

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- Definition

Indicates (true false) whether practical expedients are elected for not reassessing whether any expired or existing contract is or contains lease, lease classification for expired or existing lease, and initial direct cost for any existing lease.

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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.

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- Definition

Indicates (true false) whether lessee has option to extend operating lease.

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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- Definition

Amount of sublease income excluding finance and operating lease expense.

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Operating leases - Additional Information (Details) $ in Millions	1 Months Ended		12 Months Ended
	Apr. 30, 2024	Sep. 30, 2023	Dec. 31, 2025 USD ($) item	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 08, 2024	Jul. 31, 2022
Lessee, Lease, Description [Line Items]
Term of contract							24 months
Period of extension							12 months
Incremental borrowing rate			4.50%
Operating lease cost			$ 11.8	$ 15.1	$ 13.4
Short-term lease cost			$ 6.9	8.2	6.8
Operating Lease, Weighted Average Remaining Lease Term			4 years 7 months 6 days
Charter-hire costs
Lessee, Lease, Description [Line Items]
Lease cost			$ 18.0	22.7	19.6
General and administrative expenses
Lessee, Lease, Description [Line Items]
Lease cost			$ 0.7	0.6	$ 0.6
Ardmore Sealeader
Lessee, Lease, Description [Line Items]
Period of extension						12 months
Hansa Sealifter and Hansa Sealancer
Lessee, Lease, Description [Line Items]
Period of extension	12 months
Lessee, Operating Lease, Existence of Option to Extend [true false]	true
Number of vessels redelivered \| item			3
Time charter-in contracts
Lessee, Lease, Description [Line Items]
Term of contract		12 months
Period of extension		6 months
Sublease income			$ 27.0	$ 50.0
Lease, Practical Expedients, Package [true false]		true
Office leases
Lessee, Lease, Description [Line Items]
Operating lease weighted average discount rate			4.00%