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Corporate Investments and Funds Held for Clients - Schedule of Investment of Funds Held for Clients (Details) - USD ($) $ in Millions | Mar. 31, 2026 | Jun. 30, 2025 | Mar. 31, 2025 | [1]
--- | --- | --- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Restricted cash and cash equivalents held to satisfy client funds obligations | $ 9,369.5 | [1] | $ 1,706.8 | $ 5,518.6
Total funds held for clients | 46,413.1 |  | 30,985.7 |
Current |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Restricted short-term and long term marketable securities held to satisfy client funds obligations | 6,561.4 |  | 3,155.7 |
Non-current |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Restricted short-term and long term marketable securities held to satisfy client funds obligations | $ 30,482.2 |  | $ 26,123.2 |
[1] | See Note 7 for a reconciliation of restricted cash and restricted cash equivalents in funds held for clients on the Consolidated Balance Sheets.

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