Debt (Details) |
9 Months Ended |
---|---|
Mar. 31, 2018
USD ($)
| |
Debt [Line Items] | |
Maximum board-authorized aggregate commercial paper limit | $ 2,000,000,000 |
Carrying value of total debt | 8,300,000,000 |
Aggregate outstanding commercial paper and short-term debt minimum amount outstanding during period | 254,500,000 |
Maximum amount outstanding | 1,500,000,000 |
Commercial Paper | |
Debt [Line Items] | |
Carrying value of total debt | $ 758,000,000 |