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Parent Company (Income Statement) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Operating Expenses [Abstract] |  |  |
Income from continuing operations before income taxes and noncontrolling interests | $ 7,473 | $ 6,988 | $ 3,429
Income tax expense (benefit) | 1,360 | 1,263 | 426
Net income from continuing operations | 6,113 | 5,725 | 3,003
Income from discontinued operations before taxes |  |  | 5,777
Income taxes from discontinued operations |  |  | 1,222
Net income from discontinued operations |  |  | 4,555
Net pension and other postretirement benefit plan activity arising during the period. | (278) | 372 | 63
Other comprehensive income (loss), after tax and net of reclassifications into Net income | (10,581) | (2,361) | 1,971
Comprehensive income (loss) attributable to PNC | (4,540) | 3,313 | 9,488
Discontinued Operations |  |  |
Operating Expenses [Abstract] |  |  |
Other comprehensive income (loss), after tax and net of reclassifications into Net income |  |  | 115
Parent Company |  |  |
Operating Revenues [Abstract] |  |  |
Interest income | 104 | 15 | 38
Noninterest income (loss) | (37) | 41 | 37
Total operating revenue | 4,272 | 4,460 | 14,121
Operating Expenses [Abstract] |  |  |
Interest expense | 326 | 129 | 179
Other expense | 136 | 245 | 91
Total operating expense | 462 | 374 | 270
Income before income taxes and equity in undistributed net income of subsidiaries | 3,810 | 4,086 | 13,851
Equity in undistributed net income of subsidiaries from continuing operations: | 2,303 | 1,628 |
Income from continuing operations before income taxes and noncontrolling interests | 6,113 | 5,714 | 1,756
Income tax expense (benefit) | 72 | 41 | (1,206)
Net income from continuing operations | 6,041 | 5,673 | 2,962
Income from discontinued operations before taxes |  |  | 5,777
Income taxes from discontinued operations |  |  | 1,222
Net income from discontinued operations |  |  | 4,555
Net income | 6,041 | 5,673 | 7,517
Net pension and other postretirement benefit plan activity arising during the period. | 1 | 11 | 1
Other comprehensive income (loss), after tax and net of reclassifications into Net income | 1 | 11 | 1
Comprehensive income (loss) attributable to PNC | 6,042 | 5,684 | 7,518
Parent Company | Bank Subsidiaries And Bank Holding Company |  |  |
Operating Revenues [Abstract] |  |  |
Dividends from | 3,925 | 3,980 | 13,701
Operating Expenses [Abstract] |  |  |
Equity in undistributed net income of subsidiaries from continuing operations: | 1,848 | 1,085 | (12,009)
Parent Company | Bank Subsidiaries And Bank Holding Company | Discontinued Operations |  |  |
Operating Revenues [Abstract] |  |  |
Dividends from |  |  | 126
Operating Expenses [Abstract] |  |  |
Equity in undistributed net income of subsidiaries from continuing operations: |  |  | 5,651
Parent Company | Non Bank Subsidiaries |  |  |
Operating Revenues [Abstract] |  |  |
Dividends from | 280 | 424 | 345
Operating Expenses [Abstract] |  |  |
Equity in undistributed net income of subsidiaries from continuing operations: | $ 455 | $ 543 | $ (86)

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