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Short-Term Financing - Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020
Short-term Debt [Line Items] |  |  |
Line of credit facility, fair value of amount outstanding |  | $ 0 | $ 0
Commercial paper |  | $ 0 | 0
Maturities of short-term funding agreements (up to) |  | 5 days |
Obligations under reverse repurchase agreements | [1] | $ 23,500,000 | $ 13,600,000
364-Day Credit Agreement |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 3,750,000,000 |
Term of credit |  | 364 days |
Debt instrument, extension option term |  | 1 year |
Credit Facility Expiring In June Two Thousand Twenty Four |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 2,750,000,000 |
Term of credit |  | 5 years |
Line of credit facility potentially available increase in maximum borrowing capacity |  | $ 500,000,000 |
Credit Facility Expiring In June Two Thousand Twenty Six |  |  |
Short-term Debt [Line Items] |  |  |
Maximum borrowing capacity under credit facilities |  | $ 3,200,000,000 |
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 |  | $ 9,700,000,000 |
Debt instrument, maturity period |  | 364 days |
[1] | (A) As of June 30, 2021, $23.5 million of long-term marketable securities have been pledged as collateral under the Company's reverse repurchase agreements. As of June 30, 2020, $13.6 million of long-term marketable securities have been pledged as collateral under the Company's reverse repurchase agreements (see Note 8).

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