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Consolidated Statements of Condition (Parenthetical) $ in Millions | Sep. 30, 2024 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares
--- | --- | ---
Statement of Financial Position [Abstract] |  |
Pledged investment securities | $ 10,236 | $ 2,822
Loans held-for-sale, fair value | 1,595 | 902
Deferred loan fees and costs | $ 67 | $ 0
Common stock, par value (in usd per share) | $ / shares | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | shares | 666,666,666 | 300,000,000
Common stock, shares issued (in shares) | shares | 422,729,599 | 248,051,930
Common stock outstanding (in shares) | shares | 415,257,967 | 240,688,790
Treasury stock (in shares) | shares | 7,471,632 | 7,363,140
Net unrealized loss on securities available for sale, tax | $ 185 | $ 225
Net unrealized loss on pension and post-retirement obligations, tax | 11 | 12
Net unrealized (loss) gain on cash flow hedges, tax | $ (27) | $ (6)

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