Common Stock and Related Matters - Dividends Declared And Or Paid (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended					9 Months Ended
		Jan. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Dividends Payable [Line Items]
Dividends Declared per Share of Common Stock		$ 0.35	$ 0.35			$ 1.40	$ 0.10	$ 1.05	$ 0.30
Dividend Declared [Member]
Dividends Payable [Line Items]
Accrued preferred dividends payable date			Nov. 15, 2022	Aug. 15, 2022	May 16, 2022	Feb. 15, 2022
Total Common Dividends Declared			$ 80.5	$ 80.7	$ 81.2	$ 81.4
Amount of Common Dividends Paid or To Be Paid			79.2	79.3	79.8	80.1
Accrued Dividends	[1]		$ 1.3	$ 1.4	$ 1.4	$ 1.3		$ 1.3
Dividends Declared per Share of Common Stock			$ 0.35000	$ 0.35000	$ 0.35000	$ 0.35000

[1] Represents accrued dividends on restricted stock and restricted stock units that are payable upon vesting.