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Fair Value Measurements Narrative (Details) - Recurring - USD ($) $ in Millions | Sep. 30, 2019 | Jun. 30, 2019
--- | --- | ---
Assets: |  |
Other investments | $ 109 | $ 118
Liabilities: |  |
Derivative Assets (Liabilities), at Fair Value, Net | 95 | 53
Level 1 |  |
Assets: |  |
Other investments | 109 | 118
Liabilities: |  |
Derivative Assets (Liabilities), at Fair Value, Net | 0 | 0
Level 2 |  |
Assets: |  |
Other investments | 0 | 0
Liabilities: |  |
Derivative Assets (Liabilities), at Fair Value, Net | 95 | 53
Level 3 |  |
Assets: |  |
Other investments | 0 | 0
Liabilities: |  |
Derivative Assets (Liabilities), at Fair Value, Net | $ 0 | $ 0

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