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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands, shares in Millions | Mar. 31, 2023 | Dec. 31, 2022
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Statement of Financial Position [Abstract] |  |
Trading investments, cost | $ 41,282 | $ 47,554
Available-for sale investments at fair value, cost | 2,487,749 | 2,554,332
Allowance for credit losses | $ 1,479,306 | $ 1,357,075
Preferred stock, par or stated value (in dollars per share) | $ 0.20 | $ 0.20
Preferred stock, shares authorized (in shares) | 20.0 | 20.0
Preferred stock, shares issued (in shares) | 2.5 | 2.5
Preferred stock, liquidation preference (in dollars per share) | $ 100 | $ 100
Common stock, par value (in dollars per share) | $ 0.20 | $ 0.20
Common stock, shares authorized (in shares) | 1,125.0 | 1,125.0
Common stock, shares issued (in shares) | 437.6 | 435.1
Tax benefit on accumulated other comprehensive loss | $ 25,139 | $ 30,160
Common stock held in treasury (in shares) | 195.4 | 194.4

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