v3.26.1
Related Party Transactions - Investments in Company Common Stock Through Stock Fund (Details) - MAGNERA CORPORATION 401(K) SAVINGS PLAN [Member] - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Magnera Corporation Common Stock [Member]    
Related Party Transactions [Abstract]    
Shares or units (in Shares) 8,138 11,383
Fair value (in Dollars) $ 123,209 $ 206,829
Stock Fund [Member]    
Related Party Transactions [Abstract]    
Shares or units (in Shares) 91,266 128,465
Per-unit price (in Dollars per share) $ 1.35 $ 1.61
Fair value (in Dollars) $ 124,570 $ 210,593