$FNB
FNB CORP/PA/ Stock $fnb

$fnb Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000003780824000006 Filed on February 26, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$543.0M		$1.973B
YoY Change	22.3%		53.54%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$14.00M	$17.00M	$59.00M
YoY Change	-33.33%	-10.53%	20.41%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$224.0M		$656.0M
YoY Change	109.35%		297.58%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$155.9M	$58.30M	$583.6M
YoY Change	-14.38%	-66.82%	5.59%
Income Tax	$33.55M	$7.626M	$98.80M
% Of Pretax Income	21.52%	13.08%	16.93%
Net Earnings	$116.3M	$48.66M	$476.8M
YoY Change	-19.49%	-64.6%	10.61%
Net Earnings / Revenue	21.42%		24.17%
Basic Earnings Per Share	$0.32		$1.32
Diluted Earnings Per Share	$0.32	$0.13	$1.31
COMMON SHARES
Basic Shares Outstanding	358.9M shares	358.8M shares	360.7M shares
Diluted Shares Outstanding	362.6M shares		362.9M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.487B	$1.576B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$474.0M	$461.0M	$461.0M
YoY Change	-19.26%	6.71%	6.71%
Goodwill	$2.477B	$2.477B
YoY Change	0.0%	0.0%
Intangibles	$65.00M	$69.00M
YoY Change	-22.62%	-22.47%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$45.90B	$46.16B	$46.16B
YoY Change	3.96%	5.56%	5.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$212.4M	$215.3M	$215.3M
YoY Change	46.28%	47.87%	47.87%
Deferred Revenue
YoY Change
Short-Term Debt	$2.074B	$2.506B	$2.506B
YoY Change	-3.49%	82.65%	82.65%
Long-Term Debt Due	$117.0M	$113.0M	$113.0M
YoY Change	-1.68%	-9.6%	-9.6%
Total Short-Term Liabilities	$2.074B	$2.506B	$2.506B
YoY Change	198.76%	826.09%	826.09%
LONG-TERM LIABILITIES
Long-Term Debt	$2.121B	$1.971B	$1.971B
YoY Change	165.79%	80.33%	80.33%
Other Long-Term Liabilities	$960.0M	$920.0M	$920.0M
YoY Change	66.72%	9.92%	9.92%
Total Long-Term Liabilities	$3.081B	$2.891B	$2.891B
YoY Change	124.27%	49.79%	49.79%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.074B	$2.506B	$2.506B
Total Long-Term Liabilities	$3.081B	$2.891B	$2.891B
Total Liabilities	$39.89B	$40.11B	$40.11B
YoY Change	3.99%	5.35%	5.35%
SHAREHOLDERS EQUITY
Retained Earnings	$1.740B	$1.669B
YoY Change	18.29%	21.82%
Common Stock	$4.698B	$4.696B
YoY Change	0.02%	-0.09%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.006B	$6.050B	$6.050B
YoY Change
Total Liabilities & Shareholders Equity	$45.90B	$46.16B	$46.16B
YoY Change	3.96%	5.56%	5.56%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$116.3M	$48.66M	$476.8M
YoY Change	-19.49%	-64.6%	10.61%
Depreciation, Depletion And Amortization	$14.00M	$17.00M	$59.00M
YoY Change	-33.33%	-10.53%	20.41%
Cash From Operating Activities	$245.0M	-$20.00M	$423.0M
YoY Change	1189.47%	-111.3%	-65.27%
INVESTING ACTIVITIES
Capital Expenditures	$29.00M	$17.00M	$88.00M
YoY Change	-12.12%	0.0%	-7.37%
Acquisitions
YoY Change
Other Investing Activities	$105.0M	-$520.0M	-$2.173B
YoY Change	-136.97%	-16.8%	-26.59%
Cash From Investing Activities	$76.00M	-$537.0M	-$2.261B
YoY Change	-123.97%	-16.36%	-25.99%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$11.00M		$352.0M
YoY Change	-96.41%		52.38%
Cash From Financing Activities	-$410.0M	496.0M	$1.740B
YoY Change	-218.16%	-462.04%	9566.67%
NET CHANGE
Cash From Operating Activities	$245.0M	-20.00M	$423.0M
Cash From Investing Activities	$76.00M	-537.0M	-$2.261B
Cash From Financing Activities	-$410.0M	496.0M	$1.740B
Net Change In Cash	-$89.00M	-61.00M	-$98.00M
YoY Change	-281.63%	-89.87%	-94.61%
FREE CASH FLOW
Cash From Operating Activities	$245.0M	-$20.00M	$423.0M
Capital Expenditures	$29.00M	$17.00M	$88.00M
Free Cash Flow	$216.0M	-$37.00M	$335.0M
YoY Change	-1642.86%	-123.13%	-70.17%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2023	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	28000000	usd
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CY2021	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	29000000	usd
CY2023	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	41000000	usd
CY2022	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	24000000	usd
CY2021	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	4000000	usd
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CY2023	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	150000000	usd
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CY2022Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	100000	usd
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CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Entity Registrant Name EntityRegistrantName	FNB CORP/PA/
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000037808
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CY2008	fnb	Defined Benefit Plan Assumptions Consecutive Period Of Highest Average Compensation DefinedBenefitPlanAssumptionsConsecutivePeriodOfHighestAverageCompensation	P5Y
CY2008	fnb	Defined Benefit Plan Assumptions Consecutive Term Of Employment DefinedBenefitPlanAssumptionsConsecutiveTermOfEmployment	P10Y
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-31940
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	25-1255406
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	One North Shore Center,
CY2023	dei	Entity Address Address Line2 EntityAddressAddressLine2	12 Federal Street,
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Pittsburgh,
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	15212
CY2023	dei	City Area Code CityAreaCode	800
CY2023	dei	Local Phone Number LocalPhoneNumber	555-5455
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CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
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CY2023	dei	Entity Shell Company EntityShellCompany	false
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CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	18000000	usd
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CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3493000000	usd
CY2023	us-gaap	Nature Of Operations NatureOfOperations	<div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">NATURE OF OPERATIONS</span></div><div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">F.N.B. Corporation, headquartered in Pittsburgh, Pennsylvania, is a diversified financial services company operating in seven states and the District of Columbia. Our market coverage spans several major metropolitan areas including: Pittsburgh, Pennsylvania; Baltimore, Maryland; Cleveland, Ohio; Washington, D.C.; Charlotte, Raleigh, Durham and the Piedmont Triad (Winston-Salem, Greensboro and High Point) in North Carolina; and Charleston, South Carolina. As of December 31, 2023, we had 346 branches throughout Pennsylvania, Ohio, Maryland, West Virginia, North Carolina, South Carolina, Washington D.C. and Virginia.</span></div><div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We provide a full range of commercial banking, consumer banking, and wealth management solutions through our subsidiary network which is led by our largest affiliate, FNBPA, founded in 1864. Commercial banking solutions include corporate banking, small business banking, investment real estate financing, government banking, business credit, capital markets and lease financing. Consumer banking provides a full line of consumer banking products and services including deposit products, mortgage lending, consumer lending and a complete suite of mobile and online banking services. Wealth management services include asset management, private banking and insurance.</span></div>
CY2023Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	7	state
CY2023Q4	us-gaap	Number Of Stores NumberOfStores	346	branch
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CY2023Q4	fnb	Income Tax Examination Likelihood Of Unfavorable Settlement Percentage IncomeTaxExaminationLikelihoodOfUnfavorableSettlementPercentage	0.50
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CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	3460000000	usd
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CY2023Q4	fnb	Other Nonmarketable Equity Securities Impairment OtherNonmarketableEquitySecuritiesImpairment	0	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	128600000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	99300000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	32323000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	30255000000	usd
CY2023Q4	fnb	Financing Receivable Discount Premium Remaining FinancingReceivableDiscountPremiumRemaining	42600000	usd
CY2022Q4	fnb	Financing Receivable Discount Premium Remaining FinancingReceivableDiscountPremiumRemaining	58600000	usd
CY2023Q4	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	355000000	usd
CY2023Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	7	state
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	5486000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	6624000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	6015000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	3537000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	2255000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	5148000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	3258000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	32323000000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	800000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	5200000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	5200000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	2400000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	2700000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	64800000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	81100000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	7061000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	6630000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	4128000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	2669000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	1571000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	4816000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	3380000000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	30255000000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	12000000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	107000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	32323000000	usd
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	25000000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	12000000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	113000000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	26000000	usd
CY2023	us-gaap	Financing Receivable Accrued Interest Modified FinancingReceivableAccruedInterestModified	410000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	59200000	usd
CY2023	fnb	Financing Receivable Excluding Accrued Interest Modified In Period Additional Amount FinancingReceivableExcludingAccruedInterestModifiedInPeriodAdditionalAmount	100000	usd
CY2023Q4	fnb	Financing Receivable Pooled Allowance Restructured FinancingReceivablePooledAllowanceRestructured	3800000	usd
CY2022Q4	fnb	Financing Receivable Pooled Allowance Restructured FinancingReceivablePooledAllowanceRestructured	3800000	usd
CY2023	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	28200000	usd
CY2022	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	121	contract
CY2022	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	13000000	usd
CY2022	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	12000000	usd
CY2022	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	20	contract
CY2022	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	2000000	usd
CY2023Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Housing Price Index ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineHousingPriceIndex	0.053
CY2023Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Commercial Real Estate Price Index ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineCommercialRealEstatePriceIndex	0.001
CY2023Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Sp Volatility In Next Fiscal Year ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineSPVolatilityInNextFiscalYear	0.040
CY2023Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Sp Volatility In Next Second Year ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineSPVolatilityInNextSecondYear	0.029
CY2022Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Housing Price Index ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineHousingPriceIndex	-0.037
CY2022Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Commercial Real Estate Price Index ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineCommercialRealEstatePriceIndex	-0.009
CY2022Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Sp Volatility In Next Fiscal Year ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineSPVolatilityInNextFiscalYear	0.410
CY2022Q4	fnb	Forecasted Macroeconomic Variables Percentage Of Growth Decline Sp Volatility In Next Second Year ForecastedMacroeconomicVariablesPercentageOfGrowthDeclineSPVolatilityInNextSecondYear	0.081
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	71800000	usd
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	64200000	usd
CY2022	fnb	Financing Receivable Non Purchased Credit Deterioration Loans Allowance For Credit Loss At Acquisition Date Expense Reversal FinancingReceivableNonPurchasedCreditDeteriorationLoansAllowanceForCreditLossAtAcquisitionDateExpenseReversal	28500000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	2262000000	usd
CY2022	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	215000000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	2477000000	usd
CY2023	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0	usd
CY2023Q4	us-gaap	Goodwill Goodwill	2477000000	usd
CY2023Q4	us-gaap	Land Land	65000000	usd
CY2022Q4	us-gaap	Land Land	74000000	usd
CY2023Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	279000000	usd
CY2022Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	264000000	usd
CY2023Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	468000000	usd
CY2022Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	406000000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	34000000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	23000000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	846000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	767000000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	385000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	335000000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	461000000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	432000000	usd
CY2023	us-gaap	Depreciation Depreciation	59000000	usd
CY2022	us-gaap	Depreciation Depreciation	49000000	usd
CY2021	us-gaap	Depreciation Depreciation	46000000	usd
CY2023	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	34000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	276000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	207000000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	69000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	276000000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	187000000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	89000000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	20000000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14000000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	17000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	16000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	12000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	8000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	6000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	59000000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	184500000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	215300000	usd
CY2023Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	31500000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	32700000	usd
CY2023Q4	fnb	Lessee Operating Lease Lease Not Yet Commenced Right Of Use Asset LesseeOperatingLeaseLeaseNotYetCommencedRightOfUseAsset	27800000	usd
CY2023Q4	fnb	Lessee Operating Lease Lease Not Yet Commenced Liability LesseeOperatingLeaseLeaseNotYetCommencedLiability	33000000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	30000000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	29000000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1000000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1000000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	5000000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	4000000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	3000000	usd
CY2023	fnb	Finance Lease Cost FinanceLeaseCost	3000000	usd
CY2022	fnb	Finance Lease Cost FinanceLeaseCost	1000000	usd
CY2021	fnb	Finance Lease Cost FinanceLeaseCost	0	usd
CY2023	us-gaap	Lease Cost LeaseCost	42000000	usd
CY2022	us-gaap	Lease Cost LeaseCost	36000000	usd
CY2021	us-gaap	Lease Cost LeaseCost	33000000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	29000000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	28000000	usd
CY2023	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1000000	usd
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1000000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	62000000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	9000000	usd
CY2023	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	7000000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	11000000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y1M6D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y3M25D
CY2023Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P19Y6M3D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P21Y
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.036
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.025
CY2023Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.032
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.026
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	32000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid Year One OperatingAndFinanceLeaseLiabilityToBePaidYearOne	34000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	27000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid Year Two OperatingAndFinanceLeaseLiabilityToBePaidYearTwo	29000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	25000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid Year Three OperatingAndFinanceLeaseLiabilityToBePaidYearThree	27000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	22000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	2000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid Year Four OperatingAndFinanceLeaseLiabilityToBePaidYearFour	24000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	20000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	2000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid Year Five OperatingAndFinanceLeaseLiabilityToBePaidYearFive	22000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	140000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	34000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid After Year Five OperatingAndFinanceLeaseLiabilityToBePaidAfterYearFive	174000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	266000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	44000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability To Be Paid OperatingAndFinanceLeaseLiabilityToBePaid	310000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	51000000	usd
CY2023Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	11000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability Undiscounted Excess Amount OperatingAndFinanceLeaseLiabilityUndiscountedExcessAmount	62000000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	215000000	usd
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	33000000	usd
CY2023Q4	fnb	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	248000000	usd
CY2023Q4	fnb	Qualified Affordable Housing Project Investments Other Assets QualifiedAffordableHousingProjectInvestmentsOtherAssets	81000000	usd
CY2022Q4	fnb	Qualified Affordable Housing Project Investments Other Assets QualifiedAffordableHousingProjectInvestmentsOtherAssets	86000000	usd
CY2023Q4	fnb	Qualified Affordable Housing Project Investments Unfunded Commitments QualifiedAffordableHousingProjectInvestmentsUnfundedCommitments	62000000	usd
CY2022Q4	fnb	Qualified Affordable Housing Project Investments Unfunded Commitments QualifiedAffordableHousingProjectInvestmentsUnfundedCommitments	37000000	usd
CY2023	fnb	Proportional Amortization Method Qualified Affordable Housing Project Investments Amortization ProportionalAmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	15000000	usd
CY2022	fnb	Proportional Amortization Method Qualified Affordable Housing Project Investments Amortization ProportionalAmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	14000000	usd
CY2021	fnb	Proportional Amortization Method Qualified Affordable Housing Project Investments Amortization ProportionalAmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	13000000	usd
CY2023	fnb	Amortization Method Qualified Affordable Housing Project Investments Low Income Housing Tax Credit AmortizationMethodQualifiedAffordableHousingProjectInvestmentsLowIncomeHousingTaxCredit	-16000000	usd
CY2022	fnb	Amortization Method Qualified Affordable Housing Project Investments Low Income Housing Tax Credit AmortizationMethodQualifiedAffordableHousingProjectInvestmentsLowIncomeHousingTaxCredit	-15000000	usd
CY2021	fnb	Amortization Method Qualified Affordable Housing Project Investments Low Income Housing Tax Credit AmortizationMethodQualifiedAffordableHousingProjectInvestmentsLowIncomeHousingTaxCredit	-15000000	usd
CY2023	fnb	Amortization Method Qualified Affordable Housing Project Investments Other Tax Benefits Relatedto Tax Credit Investments AmortizationMethodQualifiedAffordableHousingProjectInvestmentsOtherTaxBenefitsRelatedtoTaxCreditInvestments	-2000000	usd
CY2022	fnb	Amortization Method Qualified Affordable Housing Project Investments Other Tax Benefits Relatedto Tax Credit Investments AmortizationMethodQualifiedAffordableHousingProjectInvestmentsOtherTaxBenefitsRelatedtoTaxCreditInvestments	-2000000	usd
CY2021	fnb	Amortization Method Qualified Affordable Housing Project Investments Other Tax Benefits Relatedto Tax Credit Investments AmortizationMethodQualifiedAffordableHousingProjectInvestmentsOtherTaxBenefitsRelatedtoTaxCreditInvestments	-2000000	usd
CY2023	fnb	Amortization Method Qualified Affordable Housing Project Investments Provision For Income Tax AmortizationMethodQualifiedAffordableHousingProjectInvestmentsProvisionForIncomeTax	-3000000	usd
CY2022	fnb	Amortization Method Qualified Affordable Housing Project Investments Provision For Income Tax AmortizationMethodQualifiedAffordableHousingProjectInvestmentsProvisionForIncomeTax	-3000000	usd
CY2021	fnb	Amortization Method Qualified Affordable Housing Project Investments Provision For Income Tax AmortizationMethodQualifiedAffordableHousingProjectInvestmentsProvisionForIncomeTax	-4000000	usd
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CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	11916000000	usd
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CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	2629	shares
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CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	167327	shares
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CY2021	fnb	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Actuarial Net Gains Losses DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeActuarialNetGainsLosses	-18000000	usd
CY2023	fnb	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Amortization Of Actuarial Loss DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAmortizationOfActuarialLoss	-2000000	usd
CY2022	fnb	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Amortization Of Actuarial Loss DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAmortizationOfActuarialLoss	-2000000	usd
CY2021	fnb	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Amortization Of Actuarial Loss DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeAmortizationOfActuarialLoss	-3000000	usd
CY2023	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	3000000	usd
CY2022	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	4000000	usd
CY2021	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	21000000	usd
CY2023	fnb	Defined Benefit Plan Amounts Recognized In Net Periodic Pension Cost And Other Comprehensive Income DefinedBenefitPlanAmountsRecognizedInNetPeriodicPensionCostAndOtherComprehensiveIncome	-5000000	usd
CY2022	fnb	Defined Benefit Plan Amounts Recognized In Net Periodic Pension Cost And Other Comprehensive Income DefinedBenefitPlanAmountsRecognizedInNetPeriodicPensionCostAndOtherComprehensiveIncome	-11000000	usd
CY2021	fnb	Defined Benefit Plan Amounts Recognized In Net Periodic Pension Cost And Other Comprehensive Income DefinedBenefitPlanAmountsRecognizedInNetPeriodicPensionCostAndOtherComprehensiveIncome	-26000000	usd
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0534
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0272
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0231
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0330
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0330
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0350
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0675
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0675
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0675
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	0	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	11000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	12000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	11000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	11000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	11000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	50000000	usd
CY2023	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2023	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.06
CY2023	fnb	Defined Contribution Plan Employer Discretionary Contribution Percentage DefinedContributionPlanEmployerDiscretionaryContributionPercentage	0.03
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	21000000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	20000000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	19000000	usd
CY2022	fnb	Defined Benefit Plan Dividend Received On Common Stock DefinedBenefitPlanDividendReceivedOnCommonStock	200000	usd
CY2023	fnb	Defined Benefit Plan Dividend Received On Common Stock DefinedBenefitPlanDividendReceivedOnCommonStock	200000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	178000000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	170000000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.032
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.032
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.023
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.022
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.022
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.011
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.011
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.007
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.169
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	93000000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	94000000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	79000000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12000000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	9000000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4000000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	105000000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	103000000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	83000000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8000000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	9000000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	12000000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2000000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2000000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3000000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6000000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	11000000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15000000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	99000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	114000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	98000000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.019
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.015
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.011
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.016
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.016
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.017
CY2023	fnb	Effective Income Tax Rate Reconciliation Cash Surrender Value Of Life Insurance EffectiveIncomeTaxRateReconciliationCashSurrenderValueOfLifeInsurance	-0.005
CY2022	fnb	Effective Income Tax Rate Reconciliation Cash Surrender Value Of Life Insurance EffectiveIncomeTaxRateReconciliationCashSurrenderValueOfLifeInsurance	-0.004
CY2021	fnb	Effective Income Tax Rate Reconciliation Cash Surrender Value Of Life Insurance EffectiveIncomeTaxRateReconciliationCashSurrenderValueOfLifeInsurance	-0.005
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.073
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.206
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.196
CY2023	us-gaap	Investment Tax Credit InvestmentTaxCredit	23700000	usd
CY2022	us-gaap	Investment Tax Credit InvestmentTaxCredit	0	usd
CY2021	us-gaap	Investment Tax Credit InvestmentTaxCredit	0	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	91000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	90000000	usd
CY2023Q4	fnb	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Discount On Acquired Loans DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDiscountOnAcquiredLoans	10000000	usd
CY2022Q4	fnb	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Discount On Acquired Loans DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDiscountOnAcquiredLoans	14000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	45000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	50000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	16000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	16000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	2000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	2000000	usd
CY2023Q4	fnb	Deferred Tax Assets Tax Deferred Expense Lease Liability DeferredTaxAssetsTaxDeferredExpenseLeaseLiability	60000000	usd
CY2022Q4	fnb	Deferred Tax Assets Tax Deferred Expense Lease Liability DeferredTaxAssetsTaxDeferredExpenseLeaseLiability	39000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	56000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	90000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	34000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	13000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	314000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	314000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	32000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	35000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	282000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	279000000	usd
CY2023Q4	fnb	Deferred Tax Liabilities Loan Fees DeferredTaxLiabilitiesLoanFees	10000000	usd
CY2022Q4	fnb	Deferred Tax Liabilities Loan Fees DeferredTaxLiabilitiesLoanFees	10000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	20000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	24000000	usd
CY2023Q4	fnb	Deferred Tax Liabilities Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxLiabilitiesTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	10000000	usd
CY2022Q4	fnb	Deferred Tax Liabilities Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxLiabilitiesTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	7000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	40000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	31000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	13000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	12000000	usd
CY2023Q4	fnb	Deferred Tax Liabilities Lease Rightof Use Asset DeferredTaxLiabilitiesLeaseRightofUseAsset	57000000	usd
CY2022Q4	fnb	Deferred Tax Liabilities Lease Rightof Use Asset DeferredTaxLiabilitiesLeaseRightofUseAsset	35000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	161000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	131000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	121000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	148000000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	32200000	usd
CY2023Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	2600000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5000000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3500000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	4700000	usd
CY2023Q4	fnb	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations Next12 Months UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitationsNext12Months	40000.00	usd
CY2023	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	51000000	usd
CY2023	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-71000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	122000000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	485000000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	439000000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	405000000	usd
CY2023	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8000000	usd
CY2022	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8000000	usd
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8000000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	477000000	usd
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	477000000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	431000000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	431000000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	397000000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	397000000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	360743462	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	349976557	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	319791100	shares
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2154344	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4075640	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3690388	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	362897806	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	354052197	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	323481488	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.32
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.23
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.24
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.22
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.23
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2023Q4	us-gaap	Capital Capital	4456000000	usd
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1216
CY2023Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	3664000000	usd
CY2023Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2023Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	3847000000	usd
CY2023Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.1050
CY2023Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	3786000000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1033
CY2023Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	2198000000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0600
CY2023Q4	fnb	Banking Regulation Tier1 Risk Based Capital Capital Adequacy With Buffer Minimum BankingRegulationTier1RiskBasedCapitalCapitalAdequacyWithBufferMinimum	3114000000	usd
CY2023Q4	fnb	Banking Regulation Tier1 Risk Based Capital Ratio Capital Adequacy With Buffer Minimum BankingRegulationTier1RiskBasedCapitalRatioCapitalAdequacyWithBufferMinimum	0.0850
CY2023Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	3680000000	usd
CY2023Q4	fnb	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1004
CY2023Q4	fnb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	2565000000	usd
CY2023Q4	fnb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0700
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	3786000000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0872
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	1736000000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2023Q4	us-gaap	Risk Weighted Assets RiskWeightedAssets	36641000000	usd
CY2022Q4	us-gaap	Capital Capital	4183000000	usd
CY2022Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1206
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CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	0	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	0	usd
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CY2022Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2022Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	3640000000	usd
CY2022Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.1050
CY2022Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	3511000000	usd
CY2022Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1013
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CY2022Q4	fnb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	2427000000	usd
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CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	1626000000	usd
CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2022Q4	us-gaap	Risk Weighted Assets RiskWeightedAssets	34671000000	usd
CY2023Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	555100000	usd
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CY2023Q4	us-gaap	Assets Assets	46158000000	usd
CY2023Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	2546000000	usd
CY2022	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1285000000	usd
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CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	64000000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	323000000	usd
CY2022	fnb	Non Interest Expense Excluding Amortization Of Intangibles NonInterestExpenseExcludingAmortizationOfIntangibles	812000000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	114000000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	439000000	usd
CY2022Q4	us-gaap	Assets Assets	43725000000	usd
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	2566000000	usd
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CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	98000000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	405000000	usd
CY2021Q4	us-gaap	Assets Assets	39513000000	usd
CY2021Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	2304000000	usd
CY2023Q4	fnb	Percentage Of Securities Using Market Based Information PercentageOfSecuritiesUsingMarketBasedInformation	1.000
CY2023Q4	fnb	Collateral Dependent Loans Allowance For Credit Loss CollateralDependentLoansAllowanceForCreditLoss	8200000	usd
CY2023	fnb	Provision For Loan And Lease Losses Fair Value Disclosure ProvisionForLoanAndLeaseLossesFairValueDisclosure	-49300000	usd
CY2023	fnb	Short Term Borrowings Fair Value For Amounts That Maturity In Period ShortTermBorrowingsFairValueForAmountsThatMaturityInPeriod	P90D
CY2023	dei	Auditor Name AuditorName	Ernst and Young LLP
CY2023	dei	Auditor Location AuditorLocation	Pittsburgh, PA
CY2023	dei	Auditor Firm AuditorFirmId	42

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$FNB
FNB CORP/PA/ Stock $fnb

2024 Q1 Form 10-K Financial Statement

#000003780824000006 Filed on February 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FNB FNB CORP/PA/ Stock $fnb

2024 Q1 Form 10-K Financial Statement

#000003780824000006 Filed on February 26, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FNB
FNB CORP/PA/ Stock $fnb