Common and Preferred Shares (Details Textual) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Mar. 08, 2023
Class of Stock [Line Items]
Common share repurchases authorized (up to) (in shares)				120.0
Common shares repurchased (in shares)	17.0	24.0	22.0
Cost basis of common stock repurchased	$ 5,814	$ 6,020	$ 3,650
Common shares remaining under share repurchase authorizations (in shares)	58.0
Shares held as treasury shares (in shares)	2.1	2.2	2.3
Cost basis of treasury stock	$ 233	$ 243	$ 252
Preferred shares, authorized, up to (in shares)	20.0	20.0
Preferred shares, par value (in dollars per share)	$ 1.667	$ 1.667
Redemption price per preferred share (in dollars per share)	1,000,000
Depositary shares redemption amount (in dollars per share)	1,000
Series D Preferred Stock
Class of Stock [Line Items]
Preferred shares, par value (in dollars per share)	$ 1.667
Repurchase Agreements
Class of Stock [Line Items]
Cost basis of common stock repurchased	$ 5,300	$ 5,900	3,500
Commissions and excise tax paid included in cost basis of common stock repurchased	$ 48	$ 55
Commissions paid included in cost basis of common stock repurchased			$ 32