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Consolidated Balance Sheets (Parenthetical) - $ / shares
 3 Months Ended 6 Months Ended
Apr. 30, 2025
Apr. 30, 2025
Oct. 31, 2024
Preferred stock, par value (in USD per share) $ 0.01 $ 0.01 $ 0.01
Preferred stock, shares issued (in shares) 30,000,000 30,000,000 30,000,000
Preferred stock, shares outstanding (in shares) 30,000,000 30,000,000 30,000,000
Common stock, par value ($ per share) $ 0.01 $ 0.01 $ 0.01
Common stock, authorized (in shares) 9,600,000,000 9,600,000,000 9,600,000,000
Common stock, issued (in shares) 1,310,531,962 1,310,531,962 1,297,258,235
Common stock, outstanding (in shares) 1,310,531,962 1,310,531,962 1,297,258,235
Convertible Preferred Stock      
Preferred stock dividend rate (as a percentage) 7.625% 7.625%