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Short-Term Financing - Narrative (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2025 | May 31, 2025 | Jun. 30, 2024
Short-term Debt [Line Items] |  |  |  |
Line of credit facility, fair value of amount outstanding |  | $ 0 |  | $ 0
Commercial paper outstanding |  | $ 4,769,500,000 |  | 0
Maturities of short-term funding agreements (up to) |  | 5 days |  |
Obligations under reverse repurchase agreements | [1] | $ 38,400,000 |  | $ 385,400,000
Aggregate committed obligations under reverse repurchase agreements |  | 7,500,000,000 |  |
364-Day Credit Agreement |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Maximum borrowing capacity under credit facilities |  | $ 4,600,000,000 |  |
Term of credit |  | 364 days |  |
Extension option term |  | 1 year |  |
Credit Facility Expiring In June 2029 |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Maximum borrowing capacity under credit facilities |  | $ 3,500,000,000 |  |
Term of credit |  | 5 years |  |
Line of credit facility potentially available increase in maximum borrowing capacity |  | $ 500,000,000 |  |
Credit Facility Expiring In June 2030 |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Maximum borrowing capacity under credit facilities |  | $ 2,500,000,000 |  |
Term of credit |  | 5 years |  |
Line of credit facility potentially available increase in maximum borrowing capacity |  | $ 500,000,000 |  |
Commercial Paper |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Maximum borrowing capacity under credit facilities |  | $ 10,600,000,000 | $ 10,300,000,000 |
Debt instrument, maturity period |  | 364 days |  |
[1] | As of June 30, 2025, $38.4 million of short-term marketable securities have been pledged as collateral under the Company's reverse repurchase agreements. As of June 30, 2024, $384.0 million of short-term marketable securities and $1.4 million of cash and cash equivalents have been pledged as collateral under the Company's reverse repurchase agreements (see Note 9).

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