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Short-term Financing - Narrative (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Jun. 30, 2024
Short-term Debt [Line Items] |  |  |
Line of credit facility, fair value of amount outstanding |  | $ 0 |
Commercial paper |  | $ 0 | $ 0
Maturities of short-term funding agreements (up to) |  | 5 days |
Obligations under reverse repurchase agreements | [1] | $ 0 | $ 385,400,000
Aggregate committed obligations under reverse repurchase agreements |  | 7,300,000,000 |
364-day credit agreement |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 4,550,000,000 |
Term of credit |  | 364 days |
Extension option term |  | 1 year |
Credit Facility Expiring In June 2028 |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 2,250,000,000 |
Term of credit |  | 5 years |
Line of credit facility potentially available increase in maximum borrowing capacity |  | $ 500,000,000 |
Credit Facility Expiring In June 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 |
Commercial paper program |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 10,300,000,000 |
Debt instrument, maturity period |  | 364 days |
[1] | 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 10).

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