Leases - Other pertinent information (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2020 USD ($)
Leases [Abstract]
Operating cash flows used for operating leases	$ 28,011
Right-of-use assets obtained in exchange for lease obligations, Finance leases	6,143
Right-of-use assets obtained in exchange for lease obligations, Operating leases	$ 23,628