v3.26.1
EQUITY METHOD INVESTMENT - Spin-Off and Deconsolidation (Details) - USD ($)
$ in Millions
 3 Months Ended 4 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Debt Securities, Available-for-Sale [Line Items]          
Net sales $ 0.0 $ 0.0   $ 0.0 $ 59.8
Cost of sales 0.0 0.0   0.0 31.1
Gross profit 0.0 0.0   0.0 28.7
Operating expenses:          
Income (loss) from operations (9.4) (2.6)   (65.0) 3.4
Other income (expense):          
Interest expense 0.0 0.0   0.0 (1.6)
Interest income 0.0 0.0   0.2 0.2
Total other income (expense), net (6.2) (64.2)   (27.9) (36.5)
Income (loss) before income taxes (15.6) (66.8)   (92.9) (33.1)
Income tax (expense) benefit (1.2) 1.8   (4.8) (25.2)
Net income (loss) 50.3 (26.1)   (184.7) $ (4.6)
GPGI Holdings          
Debt Securities, Available-for-Sale [Line Items]          
Net sales 473.2 119.6 $ 163.7 881.0  
Cost of sales 308.2 50.8 69.1 560.4  
Gross profit 165.0 68.8 94.6 320.6  
Operating expenses:          
Selling, general and administrative expenses 139.0 27.8 37.9 309.0  
Income (loss) from operations 26.0 41.0 56.7 11.6  
Other income (expense):          
Interest expense (33.1) (3.5) (5.3) (63.0)  
Interest income 0.1 1.4 2.3 0.3  
Gain (loss) on debt extinguishment 96.2 0.0 0.0 (10.6)  
Total other income (expense), net 63.2 (2.1) (3.0) (73.3)  
Income (loss) before income taxes 89.2 38.9 53.7 (61.7)  
Income tax (expense) benefit (22.1) 0.0 0.0 (25.3)  
Net income (loss) $ 67.1 $ 38.9 $ 53.7 $ (87.0)