Subsequent Events (Details) $ / shares in Units, $ in Millions			4 Months Ended
	Feb. 12, 2021 $ / shares	Jan. 25, 2021 USD ($) debtPayment	Jan. 17, 2021 $ / shares	Jan. 19, 2020 $ / shares
Subsequent Event [Line Items]
Cash dividend (in USD per share)			$ 0.40	$ 0.40
Subsequent Event
Subsequent Event [Line Items]
Cash dividend (in USD per share)	$ 0.40
Subsequent Event | Series 2019-1 Variable Funding Senior Secured Notes, Class A-1 | Senior Notes
Subsequent Event [Line Items]
Number of payments | debtPayment		2
Repayment of outstanding borrowings | $		$ 107.9