Stock-Based Compensation Stock Incentive Plan (Details)	6 Months Ended
	Mar. 31, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equitable Adjustment	(1,883)
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	13,900,000
Number of Shares Underlying Restricted Units — Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equitable Adjustment	(303,074)
Number of Shares Underlying Restricted Units — Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equitable Adjustment	(1,316,006)