v3.24.1.u1
Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at December 31: $ (670.8) $ (766.2)
Other comprehensive income (loss) (76.8) 67.4
Balance at June 30: (746.3) (699.3)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (76.6) 61.4
Accumulated Translation Adjustment [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at December 31: (474.9) (547.6)
Other comprehensive income (loss) (75.3) 60.9
Balance at June 30: (550.2) (486.7)
Accumulated  other comprehensive income (loss)    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Other comprehensive income (loss) (75.5) 66.9
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at December 31: 3.0 (4.5)
Other comprehensive income (loss) (1.8) 5.7
Balance at June 30: 1.2 1.2
Accumulated Defined Benefit Plans Adjustment [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance at December 31: (198.9) (214.1)
Other comprehensive income (loss) 1.6 0.3
Balance at June 30: (197.3) (213.8)
Noncontrolling Interests    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Other comprehensive income (loss) (1.3) 0.5
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax $ (1.3) $ 0.5