Income Taxes Income Taxes Disclosure (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Reserve for Uncertain Tax Positions, Including Interest And Penalties	$ 317.0	$ 315.6
Foreign Tax Authority | Australian Taxation Office
Income Tax Contingency [Line Items]
Income Tax Examination, Partial Payment Of Income Tax Expense	$ 5.2	$ 56.0