Stockholders' Equity - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Dividends declared	$ 370.5	$ 436.6	$ 438.4
Series D
Class of Stock [Line Items]
Dividends declared	$ 44.6	$ 44.6	$ 44.6
Dividends declared, per share amount (in USD per share)	$ 59.52	$ 59.52	$ 59.52
Series F
Class of Stock [Line Items]
Dividends declared	$ 24.4	$ 24.3	$ 24.3
Dividends declared, per share amount (in USD per share)	$ 5,000	$ 5,000	$ 5,000
Series G, Series H, And Series I Preferred Stock
Class of Stock [Line Items]
Dividends declared			$ 3.0
Series G
Class of Stock [Line Items]
Dividends declared	$ 66.0	$ 132.2	$ 132.2
Dividends declared, per share amount (in USD per share)	$ 2,687.5	$ 5,375	$ 5,375
Series H
Class of Stock [Line Items]
Dividends declared	$ 89.1	$ 89.1	$ 90.4
Dividends declared, per share amount (in USD per share)	$ 4,000	$ 4,000	$ 4,000
Series I
Class of Stock [Line Items]
Dividends declared	$ 82.3	$ 82.3	$ 82.8
Dividends declared, per share amount (in USD per share)	$ 4,000	$ 4,000	$ 4,000
Series J
Class of Stock [Line Items]
Dividends declared	$ 26.7	$ 26.7	$ 26.7
Dividends declared, per share amount (in USD per share)	$ 44.52	$ 44.52	$ 44.52
Series K
Class of Stock [Line Items]
Dividends declared	$ 37.4	$ 37.4	$ 37.4
Dividends declared, per share amount (in USD per share)	$ 5,000	$ 5,000	$ 5,000

Class of Stock [Line Items]