Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 546		$ 912		$ 1,357		$ 1,744
Other Comprehensive Income (Loss), before Tax [Abstract]
Net unrealized gains on non-OTTI securities	158		481		396		509
Net unrealized gains (losses) on OTTI securities	8		(44)		414		187
Net unrealized gains losses on cash flow hedge derivatives	6		143		(84)		35
Pension and other postretirement benefit plan adjustments	39		(5)		87		11
Other	(30)	[1]	6	[1]	(18)	[1]	39	[1]
Other comprehensive income, before tax and net of reclassifications into Net income	181		581		795		781
Other Comprehensive Income (Loss), Tax	(60)		(203)		(288)		(281)
Other comprehensive income, after tax and net of reclassifications into Net income	121		378		507		500
Comprehensive income (loss)	667		1,290		1,864		2,244
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	(5)		(1)		1		(6)
Comprehensive income attributable to PNC	$ 672		$ 1,291		$ 1,863		$ 2,250

[1] Consists of foreign currency translation adjustments and deferred tax adjustments on BlackRock's other comprehensive income in 2012.