XML 84 R68.htm IDEA: XBRL DOCUMENT
v3.19.2

ALLOWANCE FOR CREDIT LOSSES - Individual and Collective Allowance for Credit Losses (Detail) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | $ 22,543 | $ 22,153
Commercial Real Estate [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 8,832 | 8,786
Commercial and Industrial [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 5,028 | 4,556
Commercial Leases [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 385 | 373
Other [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 37 | 46
Total Commercial Loans and Leases [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 14,282 | 13,761
Direct Installment [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 1,758 | 1,764
Residential Mortgages [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 3,022 | 3,113
Indirect Installment [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 1,968 | 1,933
Consumer Lines of Credit [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 1,513 | 1,582
Consumer Loan [Member] |  |
Valuation Allowance [Line Items] |  |
Originated loans and leases outstanding, loans and leases | 8,261 | 8,392
Originated Loans and Leases [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 3 | 4
Originated allowance, collectively evaluated for impairment | 180 | 173
Originated loans and leases outstanding, loans and leases | 19,050 | 18,062
Originated loans and leases outstanding, individually evaluated for impairment | 21 | 18
Originated loans and leases outstanding, collectively evaluated for impairment | 19,029 | 18,044
Originated Loans and Leases [Member] | Commercial Real Estate [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 2 | 0
Originated allowance, collectively evaluated for impairment | 59 | 55
Originated loans and leases outstanding, loans and leases | 6,601 | 6,171
Originated loans and leases outstanding, individually evaluated for impairment | 14 | 7
Originated loans and leases outstanding, collectively evaluated for impairment | 6,587 | 6,164
Originated Loans and Leases [Member] | Commercial and Industrial [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 1 | 4
Originated allowance, collectively evaluated for impairment | 51 | 49
Originated loans and leases outstanding, loans and leases | 4,708 | 4,140
Originated loans and leases outstanding, individually evaluated for impairment | 7 | 11
Originated loans and leases outstanding, collectively evaluated for impairment | 4,701 | 4,129
Originated Loans and Leases [Member] | Commercial Leases [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 9 | 9
Originated loans and leases outstanding, loans and leases | 385 | 373
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | 385 | 373
Originated Loans and Leases [Member] | Other [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 1 | 2
Originated loans and leases outstanding, loans and leases | 37 | 46
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | 37 | 46
Originated Loans and Leases [Member] | Total Commercial Loans and Leases [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 3 | 4
Originated allowance, collectively evaluated for impairment | 120 | 115
Originated loans and leases outstanding, loans and leases | 11,731 | 10,730
Originated loans and leases outstanding, individually evaluated for impairment | 21 | 18
Originated loans and leases outstanding, collectively evaluated for impairment | 11,710 | 10,712
Originated Loans and Leases [Member] | Direct Installment [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 13 | 14
Originated loans and leases outstanding, loans and leases | 1,679 | 1,668
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | 1,679 | 1,668
Originated Loans and Leases [Member] | Residential Mortgages [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 20 | 19
Originated loans and leases outstanding, loans and leases | 2,573 | 2,612
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | 2,573 | 2,612
Originated Loans and Leases [Member] | Indirect Installment [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 18 | 15
Originated loans and leases outstanding, loans and leases | 1,968 | 1,933
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | 1,968 | 1,933
Originated Loans and Leases [Member] | Consumer Lines of Credit [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 9 | 10
Originated loans and leases outstanding, loans and leases | 1,099 | 1,119
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | 1,099 | 1,119
Originated Loans and Leases [Member] | Consumer Loan [Member] |  |
Valuation Allowance [Line Items] |  |
Originated allowance, individually evaluated for impairment | 0 | 0
Originated allowance, collectively evaluated for impairment | 60 | 58
Originated loans and leases outstanding, loans and leases | 7,319 | 7,332
Originated loans and leases outstanding, individually evaluated for impairment | 0 | 0
Originated loans and leases outstanding, collectively evaluated for impairment | $ 7,319 | $ 7,332

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ValuationAllowanceLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnb_CommercialandIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnb_CommercialLeasesPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_UnallocatedFinancingReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnb_DirectInstallmentPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fnb_IndirectInstallmentPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fnb_OriginatedLoansAndLeasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |