CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Available for sale, amortized cost	$ 34,102.4	$ 29,229.1
Held to maturity, fair value	22,381.2	20,654.5
Financing receivable, deferred commitment fee	$ 5.3	$ 6.3
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, par value (in dollars per share)	$ 1.6667	$ 1.6667
Common stock, shares authorized (in shares)	560,000,000	560,000,000
Common stock, shares outstanding (in shares)	186,337,588	195,969,746
Treasury stock, shares (in shares)	58,833,936	49,201,778
Series D Preferred Stock
Preferred stock, shares outstanding (in shares)	5,000	5,000
Series E Preferred Stock
Preferred stock, shares outstanding (in shares)	16,000	16,000