Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net income	$ 943	$ 1,004
Other Comprehensive Income (Loss), before Tax [Abstract]
Net unrealized gains (losses) on non-OTTI securities, Before Tax	504	74
Net unrealized gains (losses) on OTTI securities	(38)	3
Net unrealized gains (losses) on cash flow hedge derivatives	200	239
Pension and other postretirement benefit plan adjustments	12	60
Other	(27)	(27)
Other comprehensive income (loss), before tax and net of reclassifications into Net income	651	349
Income tax benefit (expense) related to items of other comprehensive income	(249)	(149)
Other comprehensive income (loss), after tax and net of reclassifications into Net income	402	200
Comprehensive income	1,345	1,204
Less: Comprehensive income (loss) attributable to noncontrolling interests (a)	19	1
Comprehensive income attributable to PNC	$ 1,326	$ 1,203