Subsequent Events (Details) - USD ($)		12 Months Ended
	Feb. 27, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)		$ 0.625	$ 0.625
TD Merger Agreement
Subsequent Event [Line Items]
Merger and integration expense		$ 0
TD Merger Agreement | Subsequent Event
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)	$ 0.625
Cash to be received per common share upon closing (in dollars per share)	25.00
Additional cash to be received per common share upon closing, annual basis (in dollars per share)	0.65
Additional cash to be received per common share upon closing, monthly basis (in dollars per share)	$ 0.054
TD Merger Agreement | Subsequent Event | Private Placement | Series G Convertible Preferred Stock
Subsequent Event [Line Items]
Sale of preferred stock, net (approximately)	$ 493,500,000
Preferred stock convertible as a percent of outstanding shares	4.90%