This element represents the sum of the carrying values of FHLB and FRB stock.

No definition available.

Name:	pnc_CarryingValueOfEquityInvestmentsCarriedAtCostAndFhlbAndFrbStock
Namespace Prefix:	pnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represent the transfer in of assets between classifications within Level 3.

+ References

No definition available.

+ Details

Name:	pnc_TransfersBetweenLevel3In
Namespace Prefix:	pnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represent the transfer out of assets between classifications within Level 3.

+ References

No definition available.

+ Details

Name:	pnc_TransfersBetweenLevel3Out
Namespace Prefix:	pnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

+ References

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity.

+ References

No definition available.

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosureRecurring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Fair Value (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
Fair Value (Narrative) (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Carrying value of FHLB and FRB stock	$ 1,600,000,000		$ 1,600,000,000		$ 1,600,000,000
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Recurring Liabilities - Fair Value	679,000,000		679,000,000		638,000,000
Transfers Into Level 3	12,000,000	41,000,000	26,000,000	104,000,000
Transfers Out of Level 3	30,000,000	35,000,000	97,000,000	106,000,000
Financial Derivatives [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Transfers Out of Level 3				2,000,000
Financial Derivatives [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Visa Class B Swap [Member]
Recurring Liabilities - Fair Value	146,000,000		146,000,000		90,000,000
Loans - Portfolio [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Transfers Into Level 3	7,000,000	37,000,000	17,000,000	94,000,000
Transfers Out of Level 3	22,000,000	5,000,000	76,000,000	21,000,000
Transfers between level 3 (In)			17,000,000	72,000,000
Loans - Portfolio [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Reduced Market Activity [Member]
Transfers Into Level 3				22,000,000
Loans - Portfolio [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Transfer to OREO [Member]
Transfers Out of Level 3			76,000,000	21,000,000
Loans Held For Sale [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Residential Mortgages [Member]
Transfers Into Level 3	5,000,000	4,000,000	9,000,000	10,000,000
Transfers Out of Level 3	8,000,000	30,000,000	21,000,000	83,000,000
Transfers between level 3 (Out)			17,000,000	72,000,000
Loans Held For Sale [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Residential Mortgages [Member] \| Reduced Market Activity [Member]
Transfers Into Level 3			9,000,000	10,000,000
Loans Held For Sale [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Residential Mortgages [Member] \| Transfer to OREO [Member]
Transfers Out of Level 3			$ 4,000,000	$ 11,000,000