Corporate Investments And Funds Held For Clients (Schedule Of Investment Of Funds Held For Clients) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Jun. 30, 2015
Corporate Investments And Funds Held For Clients [Abstract]
Restricted cash and cash equivalents held to satisfy client funds obligations	$ 12,267.5	$ 4,047.0
Restricted short-term marketable securities held to satisfy client funds obligations	3,032.1	4,497.7
Restricted long-term marketable securities held to satisfy client funds obligations	18,541.6	16,320.6
Total funds held for clients	$ 33,841.2	$ 24,865.3