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Parent Company (Income Statement) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Operating Expenses [Abstract] |  |  |
Income before taxes | $ 7,242 | $ 6,736 | $ 7,473
Income tax expense (benefit) | 1,289 | 1,089 | 1,360
Other comprehensive income (loss), after tax and net of reclassifications into Net income | 1,147 | 2,460 | (10,581)
Comprehensive income (loss) attributable to PNC | 7,036 | 8,038 | (4,540)
Parent Company |  |  |
Operating Revenues [Abstract] |  |  |
Interest income | 1,129 | 638 | 104
Noninterest income (loss) | 47 | 41 | (37)
Total operating revenue | 5,559 | 3,744 | 4,272
Operating Expenses [Abstract] |  |  |
Interest expense | 1,896 | 1,269 | 326
Other expense | 130 | 185 | 136
Total operating expense | 2,026 | 1,454 | 462
Income before income taxes and equity in undistributed net income of subsidiaries | 3,533 | 2,290 | 3,810
Equity in undistributed net income of subsidiaries: | 2,224 | 3,176 | 2,303
Income before taxes | 5,757 | 5,466 | 6,113
Income tax expense (benefit) | (132) | (112) | 72
Net income | 5,889 | 5,578 | 6,041
Net pension and other postretirement benefit plan activity arising during the period | 1 | 2 | 1
Other comprehensive income (loss), after tax and net of reclassifications into Net income | 1 | 2 | 1
Comprehensive income (loss) attributable to PNC | 5,890 | 5,580 | 6,042
Parent Company | Bank Subsidiaries And Bank Holding Company |  |  |
Operating Revenues [Abstract] |  |  |
Dividends from | 4,000 | 2,500 | 3,925
Operating Expenses [Abstract] |  |  |
Equity in undistributed net income of subsidiaries: | 2,200 | 3,337 | 1,848
Parent Company | Non Bank Subsidiaries |  |  |
Operating Revenues [Abstract] |  |  |
Dividends from | 383 | 565 | 280
Operating Expenses [Abstract] |  |  |
Equity in undistributed net income of subsidiaries: | $ 24 | $ (161) | $ 455

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