Income Taxes Income Taxes Disclosure (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Contingency [Line Items]
Income tax expense	$ 70.6	$ 73.2		$ 237.6	$ 276.9
Reserve for Uncertain Tax Positions, Including Interest And Penalties	$ 279.1			279.1		$ 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				$ 22.3