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Leases Narative (Details) - USD ($) $ in Millions | Jul. 01, 2019 | Sep. 30, 2019 | Jun. 30, 2019
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Operating Leases, Future Minimum Payments Due, Next Twelve Months |  |  | $ 126
Reclassification of deferred rent in accordance with ASC 842 | $ 22 |  |
Operating Lease, Weighted Average Remaining Lease Term |  | 6 years 2 months 12 days |
Operating Lease, Weighted Average Discount Rate, Percent |  | 3.00% |
Operating Leases, Future Minimum Payments, Due in Two Years |  |  | 100
Operating Leases, Future Minimum Payments, Due in Three Years |  |  | 76
Operating Leases, Future Minimum Payments, Due in Four Years |  |  | 54
Operating Leases, Future Minimum Payments, Due in Five Years |  |  | 33
Operating Leases, Future Minimum Payments, Due Thereafter |  |  | $ 94
Minimum |  |  |
Lessee, Operating Lease, Term of Contract |  | 1 year |
Maximum |  |  |
Lessee, Operating Lease, Term of Contract |  | 23 years |

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