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Accounting Policies (Details)
Sep. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle  
Operating lease, term of contract 5 years
Minimum  
New Accounting Pronouncements or Change in Accounting Principle  
Finance lease, term of contract 3 years
Maximum  
New Accounting Pronouncements or Change in Accounting Principle  
Finance lease, term of contract 6 years