Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,281.7	$ 2,244.5
Less: accumulated depreciation	(1,629.1)	(1,560.0)
Property, plant and equipment, net	652.6	684.5
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	675.0	686.5
Data processing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	972.4	902.0
Furniture, leaseholds and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 634.3	$ 656.0