Delinquent Participant Contributions (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
The Magna Group of Companies Retirement Savings Plans
Delinquent Participant Contributions
Amount failed to remit to plan in a timely manner	$ 8,102	$ 2,372

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph a
-Publisher DOL-EBSA

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