Short-term Financing - Schedule of Commercial Paper Program and Reverse Repurchase Agreements (Details) - USD ($) $ in Billions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Commercial Paper Program | ||||
| Short-term Debt [Line Items] | ||||
| Average outstanding balances (in billions) | $ 3.8 | $ 3.3 | $ 4.2 | $ 4.2 |
| Weighted average interest rates | 3.70% | 4.40% | 4.10% | 4.90% |
| Weighted average maturity (approximately in days) | 2 days | 2 days | 2 days | 2 days |
| Reverse repurchase agreements | ||||
| Short-term Debt [Line Items] | ||||
| Average outstanding balances (in billions) | $ 1.1 | $ 0.9 | $ 3.3 | $ 2.8 |
| Weighted average interest rates | 3.80% | 4.10% | 4.20% | 4.90% |