Corporate Investments And Funds Held For Clients - Schedule Of Investment Of Funds Held For Clients (Details) - USD ($) $ in Millions		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Marketable Securities [Line Items]
Restricted cash and cash equivalents held to satisfy client funds obligations	[1]	$ 6,688.0	$ 21,346.7	$ 10,568.0
Total funds held for clients		36,333.6	49,569.2
Current
Marketable Securities [Line Items]
Debt securities, available-for-sale, restricted		5,601.9	4,263.1
Long-term
Marketable Securities [Line Items]
Debt securities, available-for-sale, restricted		$ 24,043.7	$ 23,959.4

[1] See Note 4 for a reconciliation of restricted cash and restricted cash equivalents in funds held for clients on the Consolidated Balance Sheets.