Regulatory Matters (Narrative) (Details) (USD $) In Billions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount available for dividend payments to parent company without prior regulatory approval	$ 1.5
Maximum aggregated allowable credit extension in excess of the capital stock and surplus	10.00%
Maximum aggregated allowable credit extension in excess of the capital and surplus	20.00%
Outstanding cash reserves at the Federal Reserve Bank	$ 31.4
Basel I [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
US regulatory minimum - Tier 1 risk-based capital ratio		4.00%
US regulatory minimum - Total risk-based capital ratio		8.00%
US regulatory minimum - Leverage ratio		4.00%
Bank Holding Company [Member] \| Basel I [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
US regulatory well capitalized level - Tier 1 risk-based capital ratio		6.00%
US regulatory well capitalized level - Total risk-based capital ratio		10.00%
US regulatory well capitalized level - Leverage ratio		5.00%
Bank Holding Company [Member] \| Transitional Basel III [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
US regulatory well capitalized level - Tier 1 risk-based capital ratio	6.00%
US regulatory well capitalized level - Total risk-based capital ratio	10.00%
US regulatory well capitalized level - Leverage ratio	5.00%
PNC Bank \| Basel I [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
US regulatory well capitalized level - Tier 1 risk-based capital ratio		6.00%
US regulatory well capitalized level - Total risk-based capital ratio		10.00%
US regulatory well capitalized level - Leverage ratio		5.00%
PNC Bank \| Transitional Basel III [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
US regulatory well capitalized level - Tier 1 risk-based capital ratio	6.00%
US regulatory well capitalized level - Total risk-based capital ratio	10.00%
US regulatory well capitalized level - Leverage ratio	5.00%

Represents the maximum aggregated allowable credit extension in excess of the capital and surplus

No definition available.

Name:	pnc_PercentageOfCreditExtensionInExcessOfCapitalAndSurplus
Namespace Prefix:	pnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the maximum allowable credit extension in excess of the capital stock and surplus

+ References

No definition available.

+ Details

Name:	pnc_PercentageOfCreditExtensionInExcessOfCapitalStock
Namespace Prefix:	pnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1H

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826

+ Details

Name:	us-gaap_CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826

+ Details

Name:	us-gaap_CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 305

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6478312&loc=d3e61473-112792

+ Details

Name:	us-gaap_CashReserveDepositRequiredAndMade
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_ComplianceWithRegulatoryCapitalRequirementsUnderBankingRegulationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(e))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph e

-Article 4

+ Details

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

- Definition

The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

+ References

+ Details

Name:	us-gaap_TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

+ References

+ Details

Name:	us-gaap_TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

+ Details

Name:	us-gaap_TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

+ References

+ Details

Name:	us-gaap_TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=pnc_BankHoldingCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=pnc_PncBankNaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	pnc_CapitalStandardRequirementsAxis=pnc_BaselIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: