v3.26.3
Equity - Schedule of Reclassification From Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Derivative instruments                
Costs of sales and services $ (507.5)     $ (413.3)     $ (1,544.5) $ (1,532.2)
Selling, general and administrative expenses (172.3)     (167.4)     (536.5) (516.2)
Interest expense, net 73.6     64.1     209.7 175.2
Income (loss) from continuing operations before income taxes (1,187.9)     (466.0)     (1,531.4) (402.3)
Benefit (provision) for income taxes (840.6)     (82.2)     (951.2) (110.1)
Net income (loss) (2,065.3) $ (186.3) $ (281.2) (568.6) $ 67.8 $ (15.6) (2,532.8) (516.4)
Pension and other postretirement benefits                
Non-operating pension, postretirement and other charges (income) 2.1     5.6     8.8 15.4
Net income (loss) (2,065.3) $ (186.3) $ (281.2) (568.6) $ 67.8 $ (15.6) (2,532.8) (516.4)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)                
Derivative instruments                
Net income (loss) 3.2     16.8     4.2 12.8
Pension and other postretirement benefits                
Net income (loss) 3.2     16.8     4.2 12.8
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | Derivative instruments                
Derivative instruments                
Income (loss) from continuing operations before income taxes 8.4     27.8     18.3 30.1
Benefit (provision) for income taxes (3.0)     (8.8)     (6.0) (9.9)
Net income (loss) 5.4     19.0     12.3 20.2
Pension and other postretirement benefits                
Net income (loss) 5.4     19.0     12.3 20.2
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | Pension and other postretirement benefits                
Derivative instruments                
Income (loss) from continuing operations before income taxes (2.8)     (2.9)     (10.2) (9.3)
Benefit (provision) for income taxes 0.6     0.7     2.1 1.9
Net income (loss) (2.2)     (2.2)     (8.1) (7.4)
Pension and other postretirement benefits                
Net income (loss) (2.2)     (2.2)     (8.1) (7.4)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | Amortization of unrecognized net actuarial and other gains (losses)                
Pension and other postretirement benefits                
Non-operating pension, postretirement and other charges (income) (2.7)     (2.8)     (8.9) (9.0)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | Recognized (gain) loss due to curtailments, settlements, and other                
Pension and other postretirement benefits                
Non-operating pension, postretirement and other charges (income) (0.1)     (0.1)     (1.3) (0.3)
Gain (loss) on foreign currency contracts | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | Derivative instruments                
Derivative instruments                
Costs of sales and services 8.9     28.3     19.8 31.6
Selling, general and administrative expenses 0.0     0.0     0.0 0.0
Gain (loss) on interest rate contracts | Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | Derivative instruments                
Derivative instruments                
Interest expense, net $ (0.5)     $ (0.5)     $ (1.5) $ (1.5)