v3.26.1
Description of Plan - Graded Vesting Schedule for Company Matching Contributions (Details) - MAGNERA CORPORATION 401(K) SAVINGS PLAN [Member]
12 Months Ended
Dec. 31, 2025
Description of Plan [Abstract]  
Vesting Percentage, Less than 2 years 0.00%
Vesting Percentage, 2 years 25.00%
Vesting Percentage, 3 years 50.00%
Vesting Percentage, 4 years 75.00%
Vesting Percentage, 5 or more years 100.00%