Summary of Significant Accounting Policies - Property and Equipment (Details)	12 Months Ended
	Sep. 30, 2020
2510 Household Furniture [Member]
Property and Equipment [Line Items]
Property and Equipment, Useful Life	2 years
Minimum [Member] | Furniture and Fixtures
Property and Equipment [Line Items]
Property and Equipment, Useful Life	2 years
Minimum [Member] | Building and Building Improvements [Member]
Property and Equipment [Line Items]
Property and Equipment, Useful Life	5 years
Minimum [Member] | Assets Leased to Others [Member]
Property and Equipment [Line Items]
Property and Equipment, Useful Life	25 years
Maximum [Member] | Furniture and Fixtures
Property and Equipment [Line Items]
Property and Equipment, Useful Life	5 years
Maximum [Member] | Building and Building Improvements [Member]
Property and Equipment [Line Items]
Property and Equipment, Useful Life	30 years
Maximum [Member] | Assets Leased to Others [Member]
Property and Equipment [Line Items]
Property and Equipment, Useful Life	30 years