Accounting Changes and Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Accounting Changes
Operating lease liability	$ 547,642
Operating lease asset	525,634
Accumulated earnings	117,109	$ 55,797
ASU 16-02
Accounting Changes
Operating lease liability	523,500
Operating lease asset	513,900
Accumulated earnings	$ 100

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Present value of lessee's discounted obligation for lease payments from operating lease.

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