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Parent Company FInancial Statements Parent Company Financial Statements (Statements of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items] |  |  |
Net income | $ 881 | $ 1,151 | $ 1,168
Net periodic defined benefit credit | (27) | (91) | (81)
Share-based compensation expense | 52 | 60 | 41
Benefit for deferred income taxes | (92) | (27) | 79
Other, net | (5) | (614) | (469)
Net cash provided by operating activities | 1,251 | 638 | 634
Net change in premises and equipment | (153) | (82) | (70)
Net cash used in investing activities | 3,494 | (9,952) | 1,723
Cash dividends paid on preferred stock | 23 | 23 | 23
Repurchases of common stock | 17 | 43 | 729
Cash dividends paid on common stock | (371) | (353) | (369)
Net cash provided by (used in) financing activities | (1,525) | (7,083) | 4,555
Net increase (decrease) in cash and cash equivalents | 3,220 | (16,397) | 6,912
Interest paid | 1,449 | 130 | 57
Parent Company |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net income | 881 | 1,151 | 1,168
Undistributed (losses) earnings of subsidiaries, principally banks | 228 | 105 | 339
Net periodic defined benefit credit | 1 | 2 | 5
Share-based compensation expense | 18 | 22 | 19
Benefit for deferred income taxes | (2) | 0 | (2)
Other, net | (28) | (24) | (3)
Net cash provided by operating activities | 698 | 1,094 | 854
Advance to subsidiary bank | 0 | 0 | (150)
Capital transactions with subsidiaries | 150 | 0 | 0
Net change in premises and equipment | 0 | (2) | 1
Net cash used in investing activities | 150 | 2 | (151)
Maturities of medium- and long-term debt | 850 | 0 | 0
Cash dividends paid on preferred stock | (23) | (23) | (23)
Repurchases of common stock | (17) | (43) | (729)
Cash dividends paid on common stock | 371 | 353 | 369
Issuances of common stock under employee stock plans | 18 | 28 | 34
Net cash provided by (used in) financing activities | (1,243) | (391) | (1,087)
Net increase (decrease) in cash and cash equivalents | (395) | 705 | (384)
Cash and cash equivalents at beginning of period | 1,810 | 1,105 | 1,489
Cash and cash equivalents at end of period | 1,415 | 1,810 | 1,105
Interest paid | $ 76 | $ 41 | $ 21

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