The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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No definition available.

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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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Amount of contractual prepayment.

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No definition available.

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Represents borrowings obtained from a shareholder that do not bear interest and may not have fixed repayment terms, typically provided as a form of financing to support the entity's operations and, in substance, may be similar to an equity contribution.

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No definition available.

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Amount owed to related parties as of the reporting date arising from transactions conducted in the ordinary course of business, including trade and non-trade obligations.

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No definition available.

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Amount owed to related parties as of the reporting date arising from transactions conducted in the ordinary course of business, including trade and non-trade obligations within one year or normal operating cycle.

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The proportion (expressed as a percentage) of total voting rights in an entity that are owned or controlled by the reporting entity, either directly or indirectly, through equity interests or other arrangements.

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No definition available.

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Represents compensation paid to employees who are related parties, including immediate family members of key management personnel.

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Net amount of income earned from transactions with related parties during the reporting period, after offsetting any expenses incurred with such related parties, where the transactions are presented on a net basis

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Related parties disclosure (Details)	6 Months Ended		12 Months Ended
Related parties disclosure (Details)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 CHF (SFr)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Feb. 02, 2017 GBP (£)	Jan. 25, 2017 GBP (£)	Jan. 24, 2017 GBP (£)
Related Parties Disclosure [Line Items]
Payables	$ 1,946,000		$ 2,500,000
Net income	887,000		82,000
OISTE [Member]
Related Parties Disclosure [Line Items]
Payables			183,000	$ 286,000
Net income	71,499	SFr 56,205	82,000
Related parties of Carlos Moreira [Member]
Related Parties Disclosure [Line Items]
Payables	139,000
Net income
Employee compensation	$ 139,051,000	SFr 112,582
WISeCoin AG [Member]
Related Parties Disclosure [Line Items]
Ownership percentage	10.00%
Ownership percentage	90.00%		90.00%
WISeKey SAARC [Member]
Related Parties Disclosure [Line Items]
Ownership percentage							49.00%
Non-interest bearing loan from shareholder \| £					£ 12,500	£ 25,000	£ 24,507
Ownership percentage	51.00%		51.00%
WiseTrust SA [Member]
Related Parties Disclosure [Line Items]
Ownership percentage	100.00%		100.00%
WISeKey SA [Member]
Related Parties Disclosure [Line Items]
Ownership percentage	95.75%		95.75%
SEALSQ Crop [Member]
Related Parties Disclosure [Line Items]
Percentage of voting rights held	50.00%	50.00%
Quobly [Member]
Related Parties Disclosure [Line Items]
Contractual prepayment	$ 1,000,000
John O'Hara [Member]
Related Parties Disclosure [Line Items]
Payables	4,680,000
Peter Ward [Member]
Related Parties Disclosure [Line Items]
Payables	1,429,541
Accounts payable current portion	259,023
Accounts payable non current	$ 1,170,519,000
WISeKey International Holding Ltd [Member] \| WISeKey SAARC [Member]
Related Parties Disclosure [Line Items]
Ownership percentage	88.00%
Related Party [Member] \| WiseTrust SA [Member]
Related Parties Disclosure [Line Items]
Ownership percentage	50.00%
Related Party [Member] \| WISeKey SA [Member]
Related Parties Disclosure [Line Items]
Ownership percentage	50.00%