Property, Plant, and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 2,031.4	$ 1,840.8
Accumulated Depreciation	(1,251.5)	(1,155.8)
Property, Plant and Equipment, Net	779.9	685.0
Depreciation Expense	147.3	135.6	$ 127.2
Land and Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	778.1	745.7
Data Processing Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	653.7	605.0
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 599.6	$ 490.1