Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income from continuing operations	$ 5,725	$ 3,003	$ 4,591
Other comprehensive income (loss), before tax and net of reclassifications into Net income
Net change in Other	4	10	17
Other comprehensive income (loss), before tax and net of reclassifications into Net income	(3,087)	2,548	1,966
Income tax benefit (expense) related to items of other comprehensive income	726	(577)	(442)
Other comprehensive income (loss), after tax and net of reclassifications into Net income	(2,361)	1,971	1,524
Net income from discontinued operations		4,555	827
Other comprehensive income (loss), after tax and net of reclassifications into Net income	(2,361)	1,971	1,524
Comprehensive income	3,364	9,529	6,942
Less: Comprehensive income attributable to noncontrolling interests	51	41	49
Comprehensive income attributable to PNC	3,313	9,488	6,893
Discontinued Operations, Disposed of by Sale
Other comprehensive income (loss), before tax and net of reclassifications into Net income
Other comprehensive income (loss), before tax and net of reclassifications into Net income		148	5
Income tax benefit (expense) related to items of other comprehensive income		(33)	(1)
Other comprehensive income (loss), after tax and net of reclassifications into Net income		115	4
Continuing Operations
Other comprehensive income (loss), before tax and net of reclassifications into Net income
Net change in debt securities	(2,451)	1,811	1,489
Net change in cash flow hedge derivatives	(1,126)	497	297
Pension and other postretirement benefit plan adjustments	486	82	158
Net change in Other	4	10	17
Other comprehensive income (loss), before tax and net of reclassifications into Net income	(3,087)	2,400	1,961
Income tax benefit (expense) related to items of other comprehensive income	726	(544)	(441)
Other comprehensive income (loss), after tax and net of reclassifications into Net income	$ (2,361)	$ 1,856	$ 1,520