Employee Benefit Expenses - Schedule of The Current Life Expectancy After Retirement (Details) - HMH Holding BV And Subsidiaries [Member]	Dec. 31, 2025	Dec. 31, 2024
Male Pensioners [Member] \| Norwegian Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan current life expectancy after retirement	23	22.8
Male Pensioners [Member] \| German Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan current life expectancy after retirement	21	20.9
Female Pensioners [Member] \| Norwegian Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan current life expectancy after retirement	26.3	26.1
Female Pensioners [Member] \| German Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan current life expectancy after retirement	24.4	24.3

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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+ Details