Legal Matters and Contingencies (Details) - USD ($)		1 Months Ended	3 Months Ended					9 Months Ended
	Oct. 21, 2019	Dec. 31, 2019	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jul. 01, 2018
Loss Contingencies [Line Items]
Litigation settlement			$ 31,369,000		$ 18,828,000			$ 86,850,000	$ 47,189,000
Annual fund amount total										$ 100,000,000
Estimated liability under the New York Opioid Stewardship Act						$ (22,000,000.0)	$ 22,000,000
Settlement with Ohio Counties
Loss Contingencies [Line Items]
Payment pursuant to settlement		$ 66,700,000
Litigation settlement				$ 66,700,000
MDL and Other Related State Court Litigation
Loss Contingencies [Line Items]
Aggregate legal settlement (up to)	$ 18,000,000,000.0
Legal settlement term (in years)	18 years
Company's portion of aggregate legal settlement	31.00%
Program period (in years)	10 years