Shareholders' Equity - Additional Information (Detail) - $ / shares	3 Months Ended	7 Months Ended
	Mar. 31, 2025	Jul. 31, 2024
Class of Stock [Line Items]
Preferred stock, shares authorized	20,000,000
Preferred stock, par value	$ 1.00
Preferred Series F
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)	5.125%
Preferred stock. dividend rate spread (as a percent)	3.78%
Preferred Series G
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)	7.304%	5.00%
Preferred stock. dividend rate spread (as a percent)	3.174%
Preferred Series H
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)	5.625%
Preferred stock. dividend rate spread (as a percent)	4.28%
Preferred Series I
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)	3.50%
Preferred stock. dividend rate spread (as a percent)	2.679%
Preferred Series J
Class of Stock [Line Items]
Preferred stock dividend rate (as a percent)	7.50%