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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Millions			3 Months Ended							9 Months Ended		12 Months Ended
	Feb. 28, 2020	Apr. 15, 2013	Sep. 30, 2026	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025	Mar. 02, 2020
Dividend declared per share, common stock (in dollars per share)			$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36	$ 0.36
Adjustments related to tax withholding for share-based compensation										$ 4.2	$ 5.0
Shares paid for tax withholding for share based compensation (in shares)										442,503	489,212
Series B Preferred Stock
Preferred stock, dividend rate (as a percent)			7.50%	7.50%	7.50%	7.50%	7.50%	7.50%	7.50%	7.50%		7.50%
Preferred stock, cash dividends declared (in dollars per share)			$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875
Series C Preferred Stock
Preferred stock, dividend rate (as a percent)										6.50%		6.50%
Preferred stock, cash dividends declared (in dollars per share)			0.596650	$ 0.588100	$ 0.57991	$ 0.613850	0.639521	$ 0.619110	$ 0.406250
Preferred Stock \| Series B Preferred Stock
Preferred stock, dividend rate (as a percent)		7.50%								7.50%	7.50%
Preferred stock, liquidation preference per share (in dollars per share)		$ 25.00	25.00				25.00			$ 25.00	$ 25.00
Preferred Stock \| Series C Preferred Stock
Preferred stock, dividend rate (as a percent)	6.50%									6.50%	6.50%
Preferred stock, liquidation preference per share (in dollars per share)	$ 25.00		$ 25.00				$ 25.00			$ 25.00	$ 25.00		$ 25.00