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Income Taxes Income Taxes Disclosure (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Income Tax Contingency [Line Items]            
Income tax expense $ 69.0   $ 75.4 $ 167.0 $ 203.7  
Reserve for Uncertain Tax Positions, Including Interest And Penalties 281.3     281.3   $ 298.1
Foreign Tax Authority | Australian Taxation Office            
Income Tax Contingency [Line Items]            
Income Tax Examination, Partial Payment Of Income Tax Expense   $ 56.0   5.2    
Foreign Tax Authority | Ministry of Finance, India            
Income Tax Contingency [Line Items]            
Income tax expense $ 0.7     $ 22.3