CONSOLIDATED BALANCE SHEETS (Parenthetical) $ in Thousands	Dec. 31, 2020 USD ($) $ / shares shares
Trading investments, cost | $	$ 12,551
Available-forsale investments at fair value, cost | $	1,986,957
Allowance for credit losses on loans and leases | $	$ 1,361,723
Preferred stock, par value/stated value (in dollars per share) | $ / shares	$ 0.20
Preferred stock, shares authorized (in shares)	20,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.20
Common stock, shares authorized (in shares)	1,125,000,000
Common stock, shares issued (in shares)	456,700,000
Accumulated other comprehensive income, tax | $	$ 10,908
Common stock held in treasury (in shares)	81,400,000
Series B Preferred Stock
Preferred stock, par value/stated value (in dollars per share) | $ / shares	$ 100
Preferred stock, shares issued (in shares)	2,500,000