v3.26.3
Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Balance at December 31:     $ (438.8)     $ (864.1) $ (438.8) $ (864.1) $ (438.8) $ (864.1)
Other comprehensive income (loss) $ (13.0) $ (2.0) (58.4) $ (13.3) $ 240.4 123.7     (73.4) 350.8
Balance at June 30: (510.2)     (514.8)         (510.2) (514.8)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (10.5)     (10.6)         (76.1) 340.3
Accumulated Translation Adjustment [Member]                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Other comprehensive income (loss)                 (74.1) 338.8
AOCI Attributable to Parent, Net of Tax [Roll Forward]                    
Stockholders' Equity, Period Increase (Decrease)             (315.6) (675.9) (389.7) (337.1)
Accumulated  other comprehensive income (loss)                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Other comprehensive income (loss) (12.8) (1.7) (56.9) (13.5) 239.5 123.3     (71.4) 349.3
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Other comprehensive income (loss)                 (5.1) 13.6
AOCI Attributable to Parent, Net of Tax [Roll Forward]                    
Stockholders' Equity, Period Increase (Decrease)             21.7 (1.4) 16.6 12.2
Accumulated Defined Benefit Plans Adjustment [Member]                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Other comprehensive income (loss)                 7.8 (3.1)
AOCI Attributable to Parent, Net of Tax [Roll Forward]                    
Stockholders' Equity, Period Increase (Decrease)             $ (144.9) $ (186.8) (137.1) (189.9)
Noncontrolling Interests                    
Accumulated Other Comprehensive Income (Loss) [Line Items]                    
Other comprehensive income (loss) $ (0.2) $ (0.3) $ (1.5) $ 0.2 $ 0.9 $ 0.4        
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax                 $ (2.0) $ 1.5