| Employee Benefit Plans  - Weighted Average Assumptions (Details) | 12 Months Ended | |||||
|---|---|---|---|---|---|---|
| Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017 | ||||
| Postemployment Benefits [Abstract] | ||||||
| Discount rate, minimum | [1] | 0.30% | 0.50% | 0.80% | ||
| Discount rate, maximum | [1] | 1.70% | 2.30% | 1.90% | ||
| Expected rate of return on assets, minimum | [1] | 1.00% | 1.30% | 1.50% | ||
| Expected rate of return on assets, maximum | [1] | 2.90% | 2.90% | 2.90% | ||
| Rate of compensation increase, minimum | [1] | 1.80% | 3.00% | 3.00% | ||
| Rate of compensation increase, maximum | [1] | 4.50% | 4.50% | 5.80% | ||
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- Definition Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Maximum No definition available. 
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- Definition Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate Minimum. No definition available. 
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- Definition Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long-term Return on Assets Maximum No definition available. 
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- Definition Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long-term Return on Assets Minimum No definition available. 
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- Definition Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate of Compensation Increase Maximum No definition available. 
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- Definition Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate of Compensation Increase Minimum No definition available. 
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- References No definition available. 
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