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Leases Sales-Type and Direct Financing Leases (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Leases [Abstract] |  |
Lease receivables | $ 6,246 | $ 7,353
Unguaranteed residual asset values | 957 | 741
Unearned income | (789) | (939)
Equipment lease financing | 6,414 | 7,155
Carrying value of residual assets with third-party residual value | $ 400 | $ 300

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- Definition Residual Value Of Leased Asset, With Residual Value Insurance + References No definition available. + Details
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Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Definition The estimated portion of pretax income and investment tax credit remaining to be allocated to income over the lease term. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121556109&loc=d3e42840-112730 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121579104&loc=SL77920254-209983 + Details
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- Definition The net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121579104&loc=SL77920254-209983 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121556109&loc=d3e42840-112730 + Details
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- Definition This element represents leveraged lease rentals receivable, net of that portion of the rental applicable to principal and interest on the nonrecourse debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121579104&loc=SL77920254-209983 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121556109&loc=d3e42840-112730 + Details
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- Definition The estimate of the value of the leased asset at the end of the lease term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121579104&loc=SL77920254-209983 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 30 -Paragraph 14 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121556109&loc=d3e42840-112730 + Details
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