Income Taxes Income Taxes Disclosure (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Income Tax Contingency [Line Items]
Income tax expense		$ 98.0	$ 128.3
Reserve for Uncertain Tax Positions, Including Interest And Penalties	$ 299.3	299.3		$ 298.1
Foreign Tax Authority | Australian Taxation Office
Income Tax Contingency [Line Items]
Income Tax Examination, Partial Payment Of Income Tax Expense		$ 5.2		$ 56.0
Foreign Tax Authority | Ministry of Finance, India
Income Tax Contingency [Line Items]
Income tax expense	$ 21.6