Income Taxes Income Taxes Disclosure (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2020
Income Tax Contingency [Line Items]
Income tax expense		$ 90.7	$ 98.0
Reserve for Uncertain Tax Positions, Including Interest And Penalties		281.8		$ 287.1
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	$ 22.3
Foreign Tax Authority | Swedish Tax Authorities (STA)
Income Tax Contingency [Line Items]
Amount of income tax, including interest and penalties under appeal					$ 19.0