$CMA
COMERICA INC /NEW/ Stock $cma

$cma Overview Financials Valuation SEC Filings Company Website

2018 Q2 Form 10-Q Financial Statement

#000002841218000146 Filed on July 31, 2018

Income Statement

Concept	2018 Q2	2017 Q2
Revenue	$650.0M	$529.0M
YoY Change	22.87%	11.84%
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	$29.00M	$29.00M
YoY Change	0.0%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$60.00M	$29.00M
YoY Change	106.9%	3.57%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$419.0M	$302.0M
YoY Change	38.74%	106.85%
Income Tax	$93.00M	$99.00M
% Of Pretax Income	22.2%	32.78%
Net Earnings	$326.0M	$203.0M
YoY Change	60.59%	95.19%
Net Earnings / Revenue	50.15%	38.37%
Basic Earnings Per Share	$1.90	$1.15
Diluted Earnings Per Share	$1.87	$1.13
COMMON SHARES
Basic Shares Outstanding	171.0M shares	175.0M shares
Diluted Shares Outstanding	174.0M shares	179.0M shares

Balance Sheet

Concept	2018 Q2	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$5.660B	$5.631B
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	$467.0M	$484.0M
YoY Change	-3.51%	-11.03%
Goodwill
YoY Change
Intangibles
YoY Change
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	$71.99B	$71.45B
YoY Change	0.76%	0.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$1.057B	$997.0M
YoY Change	6.02%	-22.05%
Deferred Revenue
YoY Change
Short-Term Debt	$58.00M	$541.0M
YoY Change	-89.28%	4408.33%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.057B	$997.0M
YoY Change	6.02%	-22.05%
LONG-TERM LIABILITIES
Long-Term Debt	$1.783B	$2.343B
YoY Change	-23.9%	-24.93%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$1.783B	$2.343B
YoY Change	-23.9%	-24.93%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.057B	$997.0M
Total Long-Term Liabilities	$1.783B	$2.343B
Total Liabilities	$63.91B	$63.46B
YoY Change	0.7%	-0.2%
SHAREHOLDERS EQUITY
Retained Earnings	$8.374B	$7.580B
YoY Change	10.47%	5.91%
Common Stock	$3.285B	$3.251B
YoY Change	1.05%	-1.66%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.991B	$2.485B
YoY Change	20.36%	0.44%
Treasury Stock Shares	57.25M shares	52.25M shares
Shareholders Equity	$8.079B	$7.985B
YoY Change
Total Liabilities & Shareholders Equity	$71.99B	$71.45B
YoY Change	0.76%	0.23%

Cashflow Statement

Concept	2018 Q2	2017 Q2
OPERATING ACTIVITIES
Net Income	$326.0M	$203.0M
YoY Change	60.59%	95.19%
Depreciation, Depletion And Amortization	$29.00M	$29.00M
YoY Change	0.0%	0.0%
Cash From Operating Activities	$256.0M	$243.0M
YoY Change	5.35%	-24400.0%
INVESTING ACTIVITIES
Capital Expenditures	-$21.00M	-$15.00M
YoY Change	40.0%	-44.44%
Acquisitions
YoY Change
Other Investing Activities	-$548.0M	-$1.151B
YoY Change	-52.39%	5.11%
Cash From Investing Activities	-$569.0M	-$1.166B
YoY Change	-51.2%	3.92%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-863.0M	-1.765B
YoY Change	-51.1%	-179.11%
NET CHANGE
Cash From Operating Activities	256.0M	243.0M
Cash From Investing Activities	-569.0M	-1.166B
Cash From Financing Activities	-863.0M	-1.765B
Net Change In Cash	-1.176B	-2.688B
YoY Change	-56.25%	-342.6%
FREE CASH FLOW
Cash From Operating Activities	$256.0M	$243.0M
Capital Expenditures	-$21.00M	-$15.00M
Free Cash Flow	$277.0M	$258.0M
YoY Change	7.36%	892.31%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	cma	Accretion Of Discount On Receivables Acquired In Transfer AccretionOfDiscountOnReceivablesAcquiredInTransfer	2000000	USD
	cma	Accretion Of Discount On Receivables Acquired In Transfer AccretionOfDiscountOnReceivablesAcquiredInTransfer	0	USD
CY2017Q4	cma	Allowance For Off Balance Sheet Credit Losses AllowanceForOffBalanceSheetCreditLosses	42000000	USD
CY2018Q2	cma	Allowance For Off Balance Sheet Credit Losses AllowanceForOffBalanceSheetCreditLosses	34000000	USD
CY2017Q2	cma	Availableforsalesecuritiesreclassifiedtoequitysecurities Availableforsalesecuritiesreclassifiedtoequitysecurities	0	USD
CY2018Q2	cma	Availableforsalesecuritiesreclassifiedtoequitysecurities Availableforsalesecuritiesreclassifiedtoequitysecurities	81000000	USD
CY2017Q2	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	57128000000	USD
	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	57452000000	USD
CY2018Q2	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	55830000000	USD
	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	55959000000	USD
CY2017Q2	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	48723000000	USD
	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	48313000000	USD
CY2018Q2	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	49225000000	USD
	cma	Return On Average Assets ReturnOnAverageAssets	0.0174
	cma	Remeasurementofdeferredtaxes Remeasurementofdeferredtaxes	3000000	USD
	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	48825000000	USD
CY2017Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit CarryingValueOfStandbyAndCommercialLettersOfCredit	40000000	USD
CY2018Q2	cma	Carrying Value Of Standby And Commercial Letters Of Credit CarryingValueOfStandbyAndCommercialLettersOfCredit	36000000	USD
CY2017Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Allowance For Credit Losses On Lending Related Commitments CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments	15000000	USD
CY2018Q2	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Allowance For Credit Losses On Lending Related Commitments CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments	10000000	USD
CY2017Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Deferred Fees CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees	25000000	USD
CY2018Q2	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Deferred Fees CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees	26000000	USD
CY2017Q4	cma	Carrying Value Of Unused Commitments To Extend Credit CarryingValueOfUnusedCommitmentsToExtendCredit	27000000	USD
CY2018Q2	cma	Carrying Value Of Unused Commitments To Extend Credit CarryingValueOfUnusedCommitmentsToExtendCredit	24000000	USD
CY2018Q2	cma	Cash Collateral Posted For Derivatives In Liability Position CashCollateralPostedForDerivativesInLiabilityPosition	131000000	USD
CY2017Q2	cma	Commercial Lending Fees CommercialLendingFees	22000000	USD
	cma	Commercial Lending Fees CommercialLendingFees	42000000	USD
CY2018Q2	cma	Commercial Lending Fees CommercialLendingFees	23000000	USD
	cma	Commercial Lending Fees CommercialLendingFees	41000000	USD
CY2017Q2	cma	Commercialloanservicingrevenue Commercialloanservicingrevenue	6000000	USD
	cma	Commercialloanservicingrevenue Commercialloanservicingrevenue	9000000	USD
CY2018Q2	cma	Commercialloanservicingrevenue Commercialloanservicingrevenue	5000000	USD
	cma	Commercialloanservicingrevenue Commercialloanservicingrevenue	9000000	USD
CY2017Q4	cma	Cumulative Hedging Adjustmentona Discontinued Cash Flow Hedge CumulativeHedgingAdjustmentonaDiscontinuedCashFlowHedge	9000000	USD
CY2018Q2	cma	Cumulative Hedging Adjustmentona Discontinued Cash Flow Hedge CumulativeHedgingAdjustmentonaDiscontinuedCashFlowHedge	8000000	USD
CY2017Q4	cma	Cumulative Hedging Adjustmentson Derivative Swap CumulativeHedgingAdjustmentsonDerivativeSwap	56000000	USD
CY2018Q2	cma	Cumulative Hedging Adjustmentson Derivative Swap CumulativeHedgingAdjustmentsonDerivativeSwap	16000000	USD
CY2017	cma	Deferredtaxadjustmentfor Tax Cutand Jobact DeferredtaxadjustmentforTaxCutandJobact	107000000	USD
	cma	Deferredtaxadjustmentfor Tax Cutand Jobact DeferredtaxadjustmentforTaxCutandJobact	104000000	USD
CY2017Q4	cma	Deposits Customer Certificates Deposits DepositsCustomerCertificatesDeposits	2165000000	USD
CY2018Q2	cma	Deposits Customer Certificates Deposits DepositsCustomerCertificatesDeposits	2089000000	USD
CY2018Q2	cma	Derivative Assets Cash Collateral DerivativeAssetsCashCollateral	10000000	USD
CY2017Q2	cma	Efficiency Ratio EfficiencyRatio	0.5870
	cma	Efficiency Ratio EfficiencyRatio	0.6017
CY2018Q2	cma	Efficiency Ratio EfficiencyRatio	0.5324
	cma	Efficiency Ratio EfficiencyRatio	0.5474
CY2017Q2	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	302000000	USD
	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	570000000	USD
CY2018Q2	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	419000000	USD
	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	754000000	USD
CY2017Q2	cma	Interest And Dividend Income Securities Afs And Htm InterestAndDividendIncomeSecuritiesAFSAndHTM	62000000	USD
	cma	Interest And Dividend Income Securities Afs And Htm InterestAndDividendIncomeSecuritiesAFSAndHTM	123000000	USD
CY2018Q2	cma	Interest And Dividend Income Securities Afs And Htm InterestAndDividendIncomeSecuritiesAFSAndHTM	64000000	USD
	cma	Interest And Dividend Income Securities Afs And Htm InterestAndDividendIncomeSecuritiesAFSAndHTM	128000000	USD
CY2017Q4	cma	Leases Receivable Commercial Lease Financing Net Of Deferred Income LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome	468000000	USD
CY2018Q2	cma	Leases Receivable Commercial Lease Financing Net Of Deferred Income LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome	458000000	USD
CY2017Q2	cma	Letter Of Credit Fees LetterOfCreditFees	11000000	USD
	cma	Letter Of Credit Fees LetterOfCreditFees	23000000	USD
CY2018Q2	cma	Letter Of Credit Fees LetterOfCreditFees	11000000	USD
	cma	Letter Of Credit Fees LetterOfCreditFees	21000000	USD
CY2018Q2	cma	Liabilities Secured By Pledged Securities LiabilitiesSecuredByPledgedSecurities	272000000	USD
CY2017Q4	cma	Loans And Leases Receivable Consumer Loans Net Of Deferred Income LoansAndLeasesReceivableConsumerLoansNetOfDeferredIncome	2554000000	USD
CY2018Q2	cma	Loans And Leases Receivable Consumer Loans Net Of Deferred Income LoansAndLeasesReceivableConsumerLoansNetOfDeferredIncome	2476000000	USD
CY2017Q4	cma	Loans And Leases Receivable Consumer Mortgage Net Of Deferred Income LoansAndLeasesReceivableConsumerMortgageNetOfDeferredIncome	1988000000	USD
CY2018Q2	cma	Loans And Leases Receivable Consumer Mortgage Net Of Deferred Income LoansAndLeasesReceivableConsumerMortgageNetOfDeferredIncome	1954000000	USD
CY2017Q4	cma	Loans And Leases Receivable Foreign Net Of Deferred Income Other LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther	983000000	USD
CY2018Q2	cma	Loans And Leases Receivable Foreign Net Of Deferred Income Other LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther	993000000	USD
CY2017Q4	cma	Loans Receivable Commercial Financial And Agricultural Net Of Deferred Income LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome	31060000000	USD
CY2018Q2	cma	Loans Receivable Commercial Financial And Agricultural Net Of Deferred Income LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome	31530000000	USD
CY2017Q4	cma	Loans Receivable Commercial Mortgage Net Of Deferred Income LoansReceivableCommercialMortgageNetOfDeferredIncome	9159000000	USD
CY2018Q2	cma	Loans Receivable Commercial Mortgage Net Of Deferred Income LoansReceivableCommercialMortgageNetOfDeferredIncome	9124000000	USD
	cma	Longest Expiration Year Letters Of Credit LongestExpirationYearLettersOfCredit	2028
CY2017Q2	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	18000000	USD
	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	51000000	USD
CY2018Q2	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	-3000000	USD
	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	25000000	USD
	cma	Net Increase In Fixed Assets NetIncreaseInFixedAssets	27000000	USD
	cma	Net Increase In Fixed Assets NetIncreaseInFixedAssets	41000000	USD
CY2017Q4	cma	Net Unrealized Losses On Available For Sale Securities Transferred To Held To Maturity NetUnrealizedLossesOnAvailableForSaleSecuritiesTransferredToHeldToMaturity	9000000	USD
CY2017Q4	cma	Notional Amount Of Derivative Credit Risk Participation Agreements NotionalAmountOfDerivativeCreditRiskParticipationAgreements	549000000	USD
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	cma	Number Of Geographic Markets NumberOfGeographicMarkets	3	markets
	cma	Number Of Major Business Segments NumberOfMajorBusinessSegments	3	segments
	cma	Other Comprehensive Income Loss Reclassification Adjustment Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Defined Benefit Cost Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax	12000000	USD
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	cma	Other Comprehensive Income Loss Reclassification Adjustment Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Defined Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax	4000000	USD
	cma	Other Comprehensive Income Loss Reclassification Adjustment Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Defined Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax	4000000	USD
	cma	Other Comprehensiveincome Loss Reclassification Adjustment From Aoci For Amortization Of Unrealized Gains Losses On Securities Transferred From Available For Sale To Held To Maturity Net Of Tax OtherComprehensiveincomeLossReclassificationAdjustmentFromAOCIForAmortizationOfUnrealizedGainsLossesOnSecuritiesTransferredFromAvailableForSaleToHeldToMaturityNetOfTax	-1000000	USD
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CY2017Q2	cma	Othernoninterestincomefromcontractswithcustomers Othernoninterestincomefromcontractswithcustomers	12000000	USD
	cma	Othernoninterestincomefromcontractswithcustomers Othernoninterestincomefromcontractswithcustomers	29000000	USD
CY2018Q2	cma	Othernoninterestincomefromcontractswithcustomers Othernoninterestincomefromcontractswithcustomers	11000000	USD
	cma	Othernoninterestincomefromcontractswithcustomers Othernoninterestincomefromcontractswithcustomers	23000000	USD
CY2017Q2	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	64000000	USD
	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	126000000	USD
CY2018Q2	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	61000000	USD
	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	117000000	USD
CY2017Q2	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	88000000	USD
	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	175000000	USD
CY2018Q2	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	64000000	USD
	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	125000000	USD
CY2017Q4	cma	Real Estate Construction Loans Net Of Deferred Income RealEstateConstructionLoansNetOfDeferredIncome	2961000000	USD
CY2018Q2	cma	Real Estate Construction Loans Net Of Deferred Income RealEstateConstructionLoansNetOfDeferredIncome	3257000000	USD
CY2017Q4	cma	Reduced Rate Loans ReducedRateLoans	8000000	USD
CY2018Q2	cma	Reduced Rate Loans ReducedRateLoans	8000000	USD
CY2017Q2	cma	Return On Average Assets ReturnOnAverageAssets	0.0114
	cma	Return On Average Assets ReturnOnAverageAssets	0.0114
CY2018Q2	cma	Return On Average Assets ReturnOnAverageAssets	0.0185
CY2017Q4	cma	Risk Participations Covering Standby And Commercial Letters Of Credit RiskParticipationsCoveringStandbyAndCommercialLettersOfCredit	127000000	USD
CY2018Q2	cma	Risk Participations Covering Standby And Commercial Letters Of Credit RiskParticipationsCoveringStandbyAndCommercialLettersOfCredit	127000000	USD
CY2017Q2	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	71346000000	USD
	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	71581000000	USD
CY2018Q2	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70520000000	USD
	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70423000000	USD
CY2017Q2	cma	Software Expenses SoftwareExpenses	31000000	USD
	cma	Software Expenses SoftwareExpenses	60000000	USD
CY2018Q2	cma	Software Expenses SoftwareExpenses	32000000	USD
	cma	Software Expenses SoftwareExpenses	63000000	USD
	cma	Stock Issued During Period Value Warrants Exercised StockIssuedDuringPeriodValueWarrantsExercised	0	USD
	cma	Stock Issued During Period Value Warrants Exercised StockIssuedDuringPeriodValueWarrantsExercised	0	USD
CY2017Q2	cma	Taxbenefitsfromemployeestocktransactions Taxbenefitsfromemployeestocktransactions	5000000	USD
	cma	Taxbenefitsfromemployeestocktransactions Taxbenefitsfromemployeestocktransactions	29000000	USD
CY2018Q2	cma	Taxbenefitsfromemployeestocktransactions Taxbenefitsfromemployeestocktransactions	3000000	USD
	cma	Taxbenefitsfromemployeestocktransactions Taxbenefitsfromemployeestocktransactions	22000000	USD
CY2017Q4	cma	Total Internally Classified Watch List Letters Of Credit TotalInternallyClassifiedWatchListLettersOfCredit	88000000	USD
CY2018Q2	cma	Total Internally Classified Watch List Letters Of Credit TotalInternallyClassifiedWatchListLettersOfCredit	83000000	USD
CY2017Q4	cma	Total Nonperforming Assets TotalNonperformingAssets	415000000	USD
CY2018Q2	cma	Total Nonperforming Assets TotalNonperformingAssets	264000000	USD
CY2017Q4	cma	Total Nonperforming Loans TotalNonperformingLoans	410000000	USD
CY2018Q2	cma	Total Nonperforming Loans TotalNonperformingLoans	262000000	USD
CY2017Q4	cma	Watch List Letters Of Credit As Percentage Of Total Letters Of Credit WatchListLettersOfCreditAsPercentageOfTotalLettersOfCredit	0.027
CY2018Q2	cma	Watch List Letters Of Credit As Percentage Of Total Letters Of Credit WatchListLettersOfCreditAsPercentageOfTotalLettersOfCredit	0.025
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Document Period End Date DocumentPeriodEndDate	2018-06-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000028412
CY2018Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	171399203	shares
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	Comerica INC /NEW/
	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2017Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	20545000000	USD
CY2018Q2	invest	Derivative Notional Amount DerivativeNotionalAmount	20897000000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3000000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2000000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-33000000	USD
CY2017Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-19000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-101000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-251000000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-350000000	USD
CY2017Q2	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-342000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-350000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-338000000	USD
CY2017Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-361000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-451000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-589000000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2122000000	USD
CY2018Q2	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2144000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	24000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	34000000	USD
CY2017Q2	us-gaap	Advertising Expense AdvertisingExpense	7000000	USD
	us-gaap	Advertising Expense AdvertisingExpense	11000000	USD
CY2018Q2	us-gaap	Advertising Expense AdvertisingExpense	8000000	USD
	us-gaap	Advertising Expense AdvertisingExpense	14000000	USD
CY2017Q4	us-gaap	Assets Assets	71567000000	USD
CY2018Q2	us-gaap	Assets Assets	71987000000	USD
CY2017Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	10938000000	USD
CY2018Q2	us-gaap	Available For Sale Securities AvailableForSaleSecurities	11915000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	23000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	10000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	146000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	338000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	11061000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	12243000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	127000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	187000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	175000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	338000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	10624000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	11177000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	48000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	151000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	6572000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	7243000000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	4052000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	3934000000	USD
CY2018Q2	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	393000000	USD
CY2018Q2	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	399	Security
	us-gaap	Average Term Of Credit Risk Derivatives1 AverageTermOfCreditRiskDerivatives1	P2Y8M12D
CY2017Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	9000000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	19000000	USD
CY2018Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	9000000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	18000000	USD
CY2017Q2	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	6000000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	11000000	USD
CY2018Q2	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	6000000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	13000000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	7218000000	USD
CY2017Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5631000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5845000000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5660000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1587000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-185000000	USD
CY2017Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	1438000000	USD
CY2018Q2	us-gaap	Cash And Due From Banks CashAndDueFromBanks	1424000000	USD
CY2017Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.26
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.49
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.34
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.64
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2018Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	325000000	shares
CY2018Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	325000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	228164824	shares
CY2018Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	228164824	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	1141000000	USD
CY2018Q2	us-gaap	Common Stock Value CommonStockValue	1141000000	USD
CY2017Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	221000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	427000000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	290000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	468000000	USD
CY2017Q4	us-gaap	Credit Derivative Maximum Exposure Undiscounted CreditDerivativeMaximumExposureUndiscounted	0	USD
CY2018Q2	us-gaap	Credit Derivative Maximum Exposure Undiscounted CreditDerivativeMaximumExposureUndiscounted	0	USD
CY2018Q2	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	1000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-19000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	14000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	141000000	USD
CY2018Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	169000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4000000	USD
CY2018Q2	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3000000	USD
CY2018Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3000000	USD
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CY2017Q4	us-gaap	Deposits Deposits	57903000000	USD
CY2018Q2	us-gaap	Deposits Deposits	57210000000	USD
CY2017Q4	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	21500000000	USD
CY2018Q2	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	22544000000	USD
CY2017Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2152000000	USD
CY2018Q2	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2227000000	USD
CY2017Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	1000000	USD
CY2018Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	6000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	60000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	60000000	USD
CY2017Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	49000000	USD
CY2018Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	48000000	USD
CY2018Q2	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	10000000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	142000000	USD
CY2018Q2	us-gaap	Derivative Assets DerivativeAssets	197000000	USD
CY2017Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	3000000	USD
CY2018Q2	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	3000000	USD
CY2017Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	24000000	USD
CY2018Q2	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	10000000	USD
CY2017Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Assets DerivativeCreditRiskValuationAdjustmentDerivativeAssets	4000000	USD
CY2018Q2	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Assets DerivativeCreditRiskValuationAdjustmentDerivativeAssets	4000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	192000000	USD
CY2018Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	251000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	139000000	USD
CY2018Q2	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	194000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	190000000	USD
CY2018Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	326000000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	78000000	USD
CY2018Q2	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	138000000	USD
CY2017Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	102000000	USD
CY2018Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	148000000	USD
CY2017Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	39000000	USD
CY2018Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	130000000	USD
CY2017Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	49000000	USD
CY2018Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	48000000	USD
CY2018Q2	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	3000000	USD
CY2018Q2	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	0	USD
CY2017Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	46000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	88000000	USD
CY2018Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	58000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	110000000	USD
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.15
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.30
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.52
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.24
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.46
CY2017Q2	us-gaap	Equipment Expense EquipmentExpense	11000000	USD
	us-gaap	Equipment Expense EquipmentExpense	22000000	USD
CY2018Q2	us-gaap	Equipment Expense EquipmentExpense	11000000	USD
	us-gaap	Equipment Expense EquipmentExpense	22000000	USD
CY2017Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	12000000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	25000000	USD
CY2018Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	12000000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	25000000	USD
CY2017Q2	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	80000000	USD
	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	157000000	USD
CY2018Q2	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	60000000	USD
	us-gaap	Fees And Commissions Credit And Debit Cards FeesAndCommissionsCreditAndDebitCards	119000000	USD
CY2017Q2	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	57000000	USD
	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	115000000	USD
CY2018Q2	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	53000000	USD
	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	107000000	USD
CY2017Q2	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	51000000	USD
	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	100000000	USD
CY2018Q2	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	52000000	USD
	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	104000000	USD
CY2017Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	85000000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	139000000	USD
CY2018Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	26000000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	48000000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	48434000000	USD
CY2018Q2	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	49366000000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	337000000	USD
CY2018Q2	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	172000000	USD
CY2017Q4	us-gaap	Foreclosed Assets ForeclosedAssets	5000000	USD
CY2018Q2	us-gaap	Foreclosed Assets ForeclosedAssets	2000000	USD
CY2017Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	11000000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	22000000	USD
CY2018Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	12000000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	24000000	USD
CY2017Q2	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
CY2018Q2	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1000000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1000000	USD
CY2017Q2	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
CY2018Q2	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	1000000	USD
CY2017Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1266000000	USD
CY2018Q2	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	0	USD
CY2017Q2	us-gaap	Held To Maturity Securities Transferred Security At Carrying Value HeldToMaturitySecuritiesTransferredSecurityAtCarryingValue	0	USD
CY2018Q2	us-gaap	Held To Maturity Securities Transferred Security At Carrying Value HeldToMaturitySecuritiesTransferredSecurityAtCarryingValue	1266000000	USD
CY2017Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	563000000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	580000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	377000000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	411000000	USD
CY2017Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2000000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	4000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2000000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	4000000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	477000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	340000000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	67000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	39000000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	593000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	434000000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	173000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	147000000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	304000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	193000000	USD
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	99000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	165000000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	93000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	147000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	130000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	94000000	USD
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	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	28000000	USD
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	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-737000000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	1000000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	38000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-174000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-15000000	USD
CY2017Q2	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1000000	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	2000000	shares
CY2018Q2	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1000000	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1000000	shares
CY2017Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
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CY2018Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
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CY2017Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	529000000	USD
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CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	650000000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1240000000	USD
CY2017Q2	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	453000000	USD
	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	874000000	USD
CY2018Q2	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	568000000	USD
	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	1077000000	USD
CY2017Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	25832000000	USD
CY2018Q2	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	26894000000	USD
CY2017Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	4407000000	USD
CY2018Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	4236000000	USD
CY2017Q4	us-gaap	Interest Bearing Foreign Deposit Time Deposits InterestBearingForeignDepositTimeDeposits	15000000	USD
CY2018Q2	us-gaap	Interest Bearing Foreign Deposit Time Deposits InterestBearingForeignDepositTimeDeposits	34000000	USD
CY2017Q2	us-gaap	Interest Expense InterestExpense	29000000	USD
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CY2018Q2	us-gaap	Interest Expense InterestExpense	60000000	USD
	us-gaap	Interest Expense InterestExpense	101000000	USD
CY2017Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	9000000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	18000000	USD
CY2018Q2	us-gaap	Interest Expense Deposits InterestExpenseDeposits	28000000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	44000000	USD
CY2017Q2	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	20000000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	37000000	USD
CY2018Q2	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	32000000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	57000000	USD
CY2017Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	483000000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	937000000	USD
CY2018Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	619000000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1156000000	USD
CY2017Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	500000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	970000000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	590000000	USD
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CY2018Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	250000000	USD
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CY2017Q2	us-gaap	Legal Fees LegalFees	5000000	USD
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CY2018Q2	us-gaap	Legal Fees LegalFees	4000000	USD
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CY2017Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	402000000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	254000000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	49173000000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	49792000000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	48461000000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	49115000000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	4622000000	USD
CY2018Q2	us-gaap	Long Term Debt LongTermDebt	5583000000	USD
CY2017Q2	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	USD
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CY2018Q2	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	USD
	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	0	USD
CY2017Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0	USD
CY2018Q2	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1844000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-83000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-393000000	USD
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	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	650000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	614000000	USD
CY2017Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	202000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	402000000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	324000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	603000000	USD
CY2017Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	32071000000	USD
CY2018Q2	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	30316000000	USD
CY2017Q2	us-gaap	Noninterest Expense NoninterestExpense	457000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	914000000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	448000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	894000000	USD
CY2017Q2	us-gaap	Noninterest Income NoninterestIncome	276000000	USD
	us-gaap	Noninterest Income NoninterestIncome	547000000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	248000000	USD
	us-gaap	Noninterest Income NoninterestIncome	492000000	USD
CY2017Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	29000000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	58000000	USD
CY2018Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	22000000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	44000000	USD
CY2017Q2	us-gaap	Occupancy Net OccupancyNet	38000000	USD
	us-gaap	Occupancy Net OccupancyNet	76000000	USD
CY2018Q2	us-gaap	Occupancy Net OccupancyNet	37000000	USD
	us-gaap	Occupancy Net OccupancyNet	75000000	USD
CY2017Q4	us-gaap	Other Assets OtherAssets	4495000000	USD
CY2018Q2	us-gaap	Other Assets OtherAssets	4696000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-13000000	USD
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	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-30000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Investment Transferred From Available For Sale To Equity Method Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociForInvestmentTransferredFromAvailableForSaleToEquityMethodTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Investment Transferred From Available For Sale To Equity Method Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociForInvestmentTransferredFromAvailableForSaleToEquityMethodTax	1000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	21000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-197000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	13000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-151000000	USD
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	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-46000000	USD
CY2017Q2	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	14000000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	28000000	USD
CY2018Q2	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	18000000	USD
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	35000000	USD
CY2017Q4	us-gaap	Other Liabilities OtherLiabilities	1069000000	USD
CY2018Q2	us-gaap	Other Liabilities OtherLiabilities	1057000000	USD
CY2017Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	25000000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	46000000	USD
CY2018Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23000000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	38000000	USD
CY2017Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	96000000	USD
CY2018Q2	us-gaap	Other Short Term Investments OtherShortTermInvestments	134000000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	370000000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	651000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	265000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	337000000	USD
CY2017Q2	us-gaap	Payments For Restructuring PaymentsForRestructuring	14000000	USD
	us-gaap	Payments For Restructuring PaymentsForRestructuring	27000000	USD
CY2018Q2	us-gaap	Payments For Restructuring PaymentsForRestructuring	15000000	USD
	us-gaap	Payments For Restructuring PaymentsForRestructuring	27000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	81000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	104000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2169000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	891000000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	22000000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	41000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	90000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	46000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1000000000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	6000000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	3000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	771000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	895000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	153000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	516000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	48000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1259000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	5000000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	4000000	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6000000	USD
CY2017Q2	us-gaap	Profit Loss ProfitLoss	203000000	USD
	us-gaap	Profit Loss ProfitLoss	405000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	326000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	466000000	USD
CY2018Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	467000000	USD
CY2017Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	17000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	33000000	USD
CY2018Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-29000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-17000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	16000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
	us-gaap	Restructuring And Related Activities Completion Date RestructuringAndRelatedActivitiesCompletionDate	2018-12-31
CY2018Q2	us-gaap	Restructuring And Related Cost Cost Incurred To Date1 RestructuringAndRelatedCostCostIncurredToDate1	165000000	USD
CY2017Q2	us-gaap	Restructuring Charges RestructuringCharges	14000000	USD
	us-gaap	Restructuring Charges RestructuringCharges	25000000	USD
CY2018Q2	us-gaap	Restructuring Charges RestructuringCharges	11000000	USD
	us-gaap	Restructuring Charges RestructuringCharges	27000000	USD
CY2016Q4	us-gaap	Restructuring Reserve RestructuringReserve	18000000	USD
CY2017Q1	us-gaap	Restructuring Reserve RestructuringReserve	13000000	USD
CY2017Q2	us-gaap	Restructuring Reserve RestructuringReserve	11000000	USD
CY2017Q4	us-gaap	Restructuring Reserve RestructuringReserve	15000000	USD
CY2018Q1	us-gaap	Restructuring Reserve RestructuringReserve	19000000	USD
CY2018Q2	us-gaap	Restructuring Reserve RestructuringReserve	15000000	USD
CY2017Q2	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	2000000	USD
	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	5000000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7887000000	USD
CY2018Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	8374000000	USD
CY2017Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	212000000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	421000000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	187000000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	375000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	24000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	34000000	USD
CY2017Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	10000000	USD
CY2018Q2	us-gaap	Short Term Borrowings ShortTermBorrowings	58000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	82000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	37000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7796000000	USD
CY2017Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7985000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7963000000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8079000000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	0	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	4000000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	2000000	USD
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	55306483	shares
CY2018Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	57254526	shares
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2736000000	USD
CY2018Q2	us-gaap	Treasury Stock Value TreasuryStockValue	2991000000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	257000000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	328000000	USD
CY2017Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	5000000	USD
CY2018Q2	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	4000000	USD
CY2017Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	1000000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	3000000	USD
CY2018Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	2000000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10000000	USD
CY2018Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	10000000	USD
CY2018Q2	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	10000000	USD
	us-gaap	Variable Interest Entity Financial Or Other Support Amount VariableInterestEntityFinancialOrOtherSupportAmount	0	USD
	us-gaap	Variable Interest Entity Financial Or Other Support Amount VariableInterestEntityFinancialOrOtherSupportAmount	0	USD
CY2018Q2	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	150000000	USD
CY2017Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	179000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	180000000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174000000	shares
CY2017Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	175000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	175000000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
	us-gaap	Derivatives Methods Of Accounting Hedging Derivatives DerivativesMethodsOfAccountingHedgingDerivatives	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Derivatives Instruments and Hedging Activities</font></div><div style="line-height:120%;padding-top:8px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Corporation adopted ASU No. 2017-12, “Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities” (ASU 2017-12), effective January 1, 2018. At transition, the Corporation elected to change the measurement methodology of all long-haul fair value hedges existing at December 31, 2017. The prior period effect of this election was a </font><font style="font-family:inherit;font-size:10pt;">$1 million</font><font style="font-family:inherit;font-size:10pt;"> reduction to opening retained earnings, included in cumulative effect of change in accounting principles in the Consolidated Statements of Shareholders' Equity. In addition, the Corporation made a transition election to reclassify the portfolio of held-to-maturity securities to available-for-sale in January 2018 as the securities are eligible to be hedged. This resulted in the recognition of additional unrealized losses of </font><font style="font-family:inherit;font-size:10pt;">$11 million</font><font style="font-family:inherit;font-size:10pt;"> at the date of transfer.</font></div></div>

Files In Submission

Name	View Source	Status
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$CMA
COMERICA INC /NEW/ Stock $cma

2018 Q2 Form 10-Q Financial Statement

#000002841218000146 Filed on July 31, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMA COMERICA INC /NEW/ Stock $cma

2018 Q2 Form 10-Q Financial Statement

#000002841218000146 Filed on July 31, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMA
COMERICA INC /NEW/ Stock $cma