$CMA
COMERICA INC /NEW/ Stock $cma

$cma Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000002841219000102 Filed on August 01, 2019

Income Statement

Concept	2019 Q2	2018 Q2
Revenue	$727.0M	$650.0M
YoY Change	11.85%	22.87%
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	$28.00M	$29.00M
YoY Change	-3.45%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$124.0M	$60.00M
YoY Change	106.67%	106.9%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$385.0M	$419.0M
YoY Change	-8.11%	38.74%
Income Tax	$87.00M	$93.00M
% Of Pretax Income	22.6%	22.2%
Net Earnings	$298.0M	$326.0M
YoY Change	-8.59%	60.59%
Net Earnings / Revenue	40.99%	50.15%
Basic Earnings Per Share	$1.95	$1.90
Diluted Earnings Per Share	$1.94	$1.87
COMMON SHARES
Basic Shares Outstanding	152.0M shares	171.0M shares
Diluted Shares Outstanding	153.0M shares	174.0M shares

Balance Sheet

Concept	2019 Q2	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$3.581B	$5.660B
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	$470.0M	$467.0M
YoY Change	0.64%	-3.51%
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	$72.54B	$71.99B
YoY Change	0.76%	0.76%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$1.386B	$1.057B
YoY Change	31.13%	6.02%
Deferred Revenue
YoY Change
Short-Term Debt	$1.733B	$58.00M
YoY Change	2887.93%	-89.28%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.386B	$1.057B
YoY Change	31.13%	6.02%
LONG-TERM LIABILITIES
Long-Term Debt	$2.758B	$1.783B
YoY Change	54.68%	-23.9%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$2.758B	$1.783B
YoY Change	54.68%	-23.9%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.386B	$1.057B
Total Long-Term Liabilities	$2.758B	$1.783B
Total Liabilities	$65.21B	$63.91B
YoY Change	2.04%	0.7%
SHAREHOLDERS EQUITY
Retained Earnings	$9.176B	$8.374B
YoY Change	9.58%	10.47%
Common Stock	$3.309B	$3.285B
YoY Change	0.73%	1.05%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.780B	$2.991B
YoY Change	59.81%	20.36%
Treasury Stock Shares	78.37M shares	57.25M shares
Shareholders Equity	$7.323B	$8.079B
YoY Change
Total Liabilities & Shareholders Equity	$72.54B	$71.99B
YoY Change	0.76%	0.76%

Cashflow Statement

Concept	2019 Q2	2018 Q2
OPERATING ACTIVITIES
Net Income	$298.0M	$326.0M
YoY Change	-8.59%	60.59%
Depreciation, Depletion And Amortization	$28.00M	$29.00M
YoY Change	-3.45%	0.0%
Cash From Operating Activities	$385.0M	$256.0M
YoY Change	50.39%	5.35%
INVESTING ACTIVITIES
Capital Expenditures	-$13.00M	-$21.00M
YoY Change	-38.1%	40.0%
Acquisitions
YoY Change
Other Investing Activities	-$1.569B	-$548.0M
YoY Change	186.31%	-52.39%
Cash From Investing Activities	-$1.582B	-$569.0M
YoY Change	178.03%	-51.2%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.297B	-863.0M
YoY Change	-250.29%	-51.1%
NET CHANGE
Cash From Operating Activities	385.0M	256.0M
Cash From Investing Activities	-1.582B	-569.0M
Cash From Financing Activities	1.297B	-863.0M
Net Change In Cash	100.0M	-1.176B
YoY Change	-108.5%	-56.25%
FREE CASH FLOW
Cash From Operating Activities	$385.0M	$256.0M
Capital Expenditures	-$13.00M	-$21.00M
Free Cash Flow	$398.0M	$277.0M
YoY Change	43.68%	7.36%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	cma	Longest Expiration Year Letters Of Credit LongestExpirationYearLettersOfCredit	2028
	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	2019
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Central Index Key EntityCentralIndexKey	0000028412
	dei	Entity Shell Company EntityShellCompany	false
	us-gaap	Average Term Of Credit Risk Derivatives1 AverageTermOfCreditRiskDerivatives1	P3Y4M24D
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	325000000	shares
CY2019Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	325000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	228164824	shares
CY2019Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	228164824	shares
CY2018Q4	us-gaap	Credit Derivative Maximum Exposure Undiscounted CreditDerivativeMaximumExposureUndiscounted	7000000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4000000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3000000	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 Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
CY2018Q2	us-gaap	Legal Fees LegalFees	4000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P9Y0M0D
CY2019Q2	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	3300000000	USD
CY2018Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1000000	USD
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	68081176	shares
CY2019Q2	us-gaap	Treasury Stock Shares TreasuryStockShares	78367534	shares
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	7000000	USD
CY2019Q2	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	7000000	USD
	us-gaap	Variable Interest Entity Financial Or Other Support Amount VariableInterestEntityFinancialOrOtherSupportAmount	0	USD
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-06-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-10706
	dei	Entity Registrant Name EntityRegistrantName	Comerica Incorporated
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	38-1998421
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1717 Main Street, MC 6404
	dei	Entity Address City Or Town EntityAddressCityOrTown	Dallas
	dei	Entity Address State Or Province EntityAddressStateOrProvince	TX
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	75201
	dei	City Area Code CityAreaCode	(214)
	dei	Local Phone Number LocalPhoneNumber	462-6831
	dei	Security12b Title Security12bTitle	Common Stock, $5 par value
	dei	Trading Symbol TradingSymbol	CMA
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2019Q2	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	2552000000	USD
CY2018Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	3171000000	USD
CY2019Q2	us-gaap	Other Short Term Investments OtherShortTermInvestments	140000000	USD
CY2018Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	134000000	USD
CY2019Q2	us-gaap	Available For Sale Securities AvailableForSaleSecurities	12338000000	USD
CY2018Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	12045000000	USD
CY2019Q2	cma	Loans Receivable Commercial Financial And Agricultural Net Of Deferred Income LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome	33326000000	USD
CY2018Q4	cma	Loans Receivable Commercial Financial And Agricultural Net Of Deferred Income LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome	31976000000	USD
CY2019Q2	cma	Real Estate Construction Loans Net Of Deferred Income RealEstateConstructionLoansNetOfDeferredIncome	3292000000	USD
CY2018Q4	cma	Real Estate Construction Loans Net Of Deferred Income RealEstateConstructionLoansNetOfDeferredIncome	3077000000	USD
CY2019Q2	cma	Loans Receivable Commercial Mortgage Net Of Deferred Income LoansReceivableCommercialMortgageNetOfDeferredIncome	9217000000	USD
CY2018Q4	cma	Loans Receivable Commercial Mortgage Net Of Deferred Income LoansReceivableCommercialMortgageNetOfDeferredIncome	9106000000	USD
CY2019Q2	cma	Leases Receivable Commercial Lease Financing Net Of Deferred Income LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome	575000000	USD
CY2018Q4	cma	Leases Receivable Commercial Lease Financing Net Of Deferred Income LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome	507000000	USD
CY2019Q2	cma	Loans And Leases Receivable Foreign Net Of Deferred Income Other LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther	1024000000	USD
CY2018Q4	cma	Loans And Leases Receivable Foreign Net Of Deferred Income Other LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther	1013000000	USD
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CY2019Q2	us-gaap	Assets Assets	72537000000	USD
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CY2019Q2	us-gaap	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNOW	22195000000	USD
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	us-gaap	Interest Expense InterestExpense	228000000	USD
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CY2019Q2	cma	Card Fees CardFees	65000000	USD
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CY2019Q2	cma	Commercial Lending Fees CommercialLendingFees	21000000	USD
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	cma	Commercial Lending Fees CommercialLendingFees	43000000	USD
	cma	Commercial Lending Fees CommercialLendingFees	41000000	USD
CY2019Q2	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	11000000	USD
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	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	22000000	USD
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CY2019Q2	cma	Letter Of Credit Fees LetterOfCreditFees	10000000	USD
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	cma	Letter Of Credit Fees LetterOfCreditFees	19000000	USD
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CY2019Q2	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	11000000	USD
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	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	20000000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	18000000	USD
CY2019Q2	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	7000000	USD
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	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	14000000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	13000000	USD
CY2019Q2	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
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	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-8000000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1000000	USD
CY2019Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	22000000	USD
CY2018Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	22000000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	47000000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	44000000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	250000000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	248000000	USD
	us-gaap	Noninterest Income NoninterestIncome	488000000	USD
	us-gaap	Noninterest Income NoninterestIncome	492000000	USD
CY2019Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	245000000	USD
CY2018Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	250000000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	510000000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	505000000	USD
CY2019Q2	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	65000000	USD
CY2018Q2	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	64000000	USD
	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	128000000	USD
	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	125000000	USD
CY2019Q2	us-gaap	Occupancy Net OccupancyNet	37000000	USD
CY2018Q2	us-gaap	Occupancy Net OccupancyNet	37000000	USD
	us-gaap	Occupancy Net OccupancyNet	74000000	USD
	us-gaap	Occupancy Net OccupancyNet	75000000	USD
CY2019Q2	cma	Software Expenses SoftwareExpenses	28000000	USD
CY2018Q2	cma	Software Expenses SoftwareExpenses	32000000	USD
	cma	Software Expenses SoftwareExpenses	57000000	USD
	cma	Software Expenses SoftwareExpenses	63000000	USD
CY2019Q2	us-gaap	Equipment Expense EquipmentExpense	12000000	USD
CY2018Q2	us-gaap	Equipment Expense EquipmentExpense	11000000	USD
	us-gaap	Equipment Expense EquipmentExpense	24000000	USD
	us-gaap	Equipment Expense EquipmentExpense	22000000	USD
CY2019Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	6000000	USD
CY2018Q2	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	12000000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	11000000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	25000000	USD
CY2019Q2	us-gaap	Advertising Expense AdvertisingExpense	9000000	USD
CY2018Q2	us-gaap	Advertising Expense AdvertisingExpense	8000000	USD
	us-gaap	Advertising Expense AdvertisingExpense	14000000	USD
	us-gaap	Advertising Expense AdvertisingExpense	14000000	USD
CY2019Q2	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2018Q2	us-gaap	Restructuring Charges RestructuringCharges	11000000	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	27000000	USD
CY2019Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	22000000	USD
CY2018Q2	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23000000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	39000000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	38000000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	424000000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	448000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	857000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	894000000	USD
CY2019Q2	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	385000000	USD
CY2018Q2	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	419000000	USD
	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	809000000	USD
	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	754000000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	87000000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	93000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	172000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	147000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	298000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	326000000	USD
	us-gaap	Profit Loss ProfitLoss	637000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
CY2019Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	1000000	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	3000000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4000000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	297000000	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	634000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	603000000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.95
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.52
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.06
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.46
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	429000000	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	864000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	468000000	USD
CY2019Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	100000000	USD
CY2018Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	58000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	205000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	110000000	USD
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.67
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.34
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.34
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.64
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8000000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	326000000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-36000000	USD
CY2018Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	58000000	USD
CY2018Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	169000000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6000000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10000000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8079000000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7409000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	298000000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	131000000	USD
CY2019Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	100000000	USD
CY2019Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	425000000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2000000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8000000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7323000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7963000000	USD
CY2017Q4	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	15000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	895000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-139000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	110000000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	328000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	37000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	987000000	USD
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	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	34000000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8079000000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7507000000	USD
CY2018Q4	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets1 NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1	-14000000	USD
	us-gaap	Profit Loss ProfitLoss	637000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	227000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	205000000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	859000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	32000000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7323000000	USD
	us-gaap	Profit Loss ProfitLoss	637000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	31000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-17000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	14000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	57000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	60000000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-14000000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-10000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	32000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	34000000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1000000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2000000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-8000000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1000000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
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	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	12000000	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	38000000	USD
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	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-51000000	USD
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	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-15000000	USD
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	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	991000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	5000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2043000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	891000000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1685000000	USD
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	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	0	USD
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	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	49000000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	41000000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	7000000	USD
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	3000000	USD
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	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-716000000	USD
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	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-737000000	USD
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	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	350000000	USD
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	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	872000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	337000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	203000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	104000000	USD
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	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	46000000	USD
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	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	416000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-83000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-980000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-185000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4561000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5845000000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3581000000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5660000000	USD
	us-gaap	Interest Paid InterestPaid	220000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	53000000	USD
	us-gaap	Interest Paid InterestPaid	99000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	161000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	94000000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	2000000	USD
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	us-gaap	Debt Securities Held To Maturity Transfer Amount DebtSecuritiesHeldToMaturityTransferAmount	0	USD
	us-gaap	Debt Securities Held To Maturity Transfer Amount DebtSecuritiesHeldToMaturityTransferAmount	1266000000	USD
CY2019Q2	cma	Availableforsalesecuritiesreclassifiedtoequitysecurities Availableforsalesecuritiesreclassifiedtoequitysecurities	0	USD
CY2018Q2	cma	Availableforsalesecuritiesreclassifiedtoequitysecurities Availableforsalesecuritiesreclassifiedtoequitysecurities	81000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	12281000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	110000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	53000000	USD
CY2019Q2	us-gaap	Available For Sale Securities AvailableForSaleSecurities	12338000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	12225000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	36000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	216000000	USD
CY2018Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	12045000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	271000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	USD
CY2019Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	4194000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	53000000	USD
CY2019Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	4465000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1008000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	9000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	7869000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	207000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	8877000000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	216000000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	311000000	USD
CY2019Q2	cma	Liabilities Secured By Pledged Securities LiabilitiesSecuredByPledgedSecurities	259000000	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	186000000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	224000000	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	51391000000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	51801000000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	149000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	221000000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	49793000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	50163000000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	51801000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	50163000000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	223000000	USD
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CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	221000000	USD
CY2019Q2	cma	Reduced Rate Loans ReducedRateLoans	6000000	USD
CY2018Q4	cma	Reduced Rate Loans ReducedRateLoans	8000000	USD
CY2019Q2	cma	Total Nonperforming Loans TotalNonperformingLoans	230000000	USD
CY2018Q4	cma	Total Nonperforming Loans TotalNonperformingLoans	229000000	USD
CY2019Q2	us-gaap	Foreclosed Assets ForeclosedAssets	3000000	USD
CY2018Q4	us-gaap	Foreclosed Assets ForeclosedAssets	1000000	USD
CY2019Q2	cma	Total Nonperforming Assets TotalNonperformingAssets	233000000	USD
CY2018Q4	cma	Total Nonperforming Assets TotalNonperformingAssets	230000000	USD
CY2019Q2	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	68000000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	172000000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	240000000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	341000000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	39000000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	121000000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	155000000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	276000000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	346000000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	27000000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	238000000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	377000000	USD
CY2018Q2	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	2000000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	250000000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	3000000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	411000000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	4000000	USD
CY2019Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	0	USD
CY2018Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	26000000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	13000000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	48000000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	6000000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	20000000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	1000000	USD
CY2019Q2	cma	Derivative Assets Cash Collateral DerivativeAssetsCashCollateral	51000000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	21000000	USD
CY2019Q2	cma	Cash Collateral Posted For Derivatives In Liability Position CashCollateralPostedForDerivativesInLiabilityPosition	10000000	USD
CY2019Q2	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	0	USD
CY2019Q2	invest	Derivative Notional Amount DerivativeNotionalAmount	26638000000	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	350000000	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	171000000	USD
CY2018Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	21557000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	275000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	269000000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	60000000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	60000000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	45000000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	45000000	USD
CY2019Q2	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	51000000	USD
CY2019Q2	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	9000000	USD
CY2018Q4	us-gaap	Derivative Asset Collateral Obligation To Return Cash Offset DerivativeAssetCollateralObligationToReturnCashOffset	174000000	USD
CY2018Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	1000000	USD
CY2019Q2	us-gaap	Derivative Assets DerivativeAssets	239000000	USD
CY2019Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	102000000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	56000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	12000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	39000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2019Q2	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	1000000	USD
CY2019Q2	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	20000000	USD
CY2018Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	1000000	USD
CY2018Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	0	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	238000000	USD
CY2019Q2	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	82000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	55000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	223000000	USD
CY2019Q2	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Assets DerivativeCreditRiskValuationAdjustmentDerivativeAssets	7000000	USD
CY2018Q4	us-gaap	Derivative Credit Risk Valuation Adjustment Derivative Assets DerivativeCreditRiskValuationAdjustmentDerivativeAssets	2000000	USD
CY2019Q2	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	51000000	USD
CY2018Q2	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	32000000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	102000000	USD
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	57000000	USD
CY2019Q2	cma	Cumulative Hedging Adjustmentson Derivative Swap CumulativeHedgingAdjustmentsonDerivativeSwap	146000000	USD
CY2018Q4	cma	Cumulative Hedging Adjustmentson Derivative Swap CumulativeHedgingAdjustmentsonDerivativeSwap	49000000	USD
CY2019Q2	cma	Cumulative Hedging Adjustmentona Discontinued Cash Flow Hedge CumulativeHedgingAdjustmentonaDiscontinuedCashFlowHedge	7000000	USD
CY2018Q4	cma	Cumulative Hedging Adjustmentona Discontinued Cash Flow Hedge CumulativeHedgingAdjustmentonaDiscontinuedCashFlowHedge	8000000	USD
CY2019Q2	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	0	USD
CY2019Q2	cma	Allowance For Off Balance Sheet Credit Losses AllowanceForOffBalanceSheetCreditLosses	31000000	USD
CY2018Q4	cma	Allowance For Off Balance Sheet Credit Losses AllowanceForOffBalanceSheetCreditLosses	30000000	USD
CY2019Q2	cma	Carrying Value Of Unused Commitments To Extend Credit CarryingValueOfUnusedCommitmentsToExtendCredit	24000000	USD
CY2019Q2	cma	Risk Participations Covering Standby And Commercial Letters Of Credit RiskParticipationsCoveringStandbyAndCommercialLettersOfCredit	145000000	USD
CY2018Q4	cma	Risk Participations Covering Standby And Commercial Letters Of Credit RiskParticipationsCoveringStandbyAndCommercialLettersOfCredit	136000000	USD
CY2018Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	3300000000	USD
CY2019Q2	cma	Carrying Value Of Standby And Commercial Letters Of Credit CarryingValueOfStandbyAndCommercialLettersOfCredit	32000000	USD
CY2019Q2	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Deferred Fees CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees	25000000	USD
CY2019Q2	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Allowance For Credit Losses On Lending Related Commitments CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments	7000000	USD
CY2018Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit CarryingValueOfStandbyAndCommercialLettersOfCredit	34000000	USD
CY2018Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Deferred Fees CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees	28000000	USD
CY2018Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Allowance For Credit Losses On Lending Related Commitments CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments	6000000	USD
CY2019Q2	cma	Total Internally Classified Watch List Letters Of Credit TotalInternallyClassifiedWatchListLettersOfCredit	45000000	USD
CY2018Q4	cma	Total Internally Classified Watch List Letters Of Credit TotalInternallyClassifiedWatchListLettersOfCredit	49000000	USD
CY2019Q2	cma	Watch List Letters Of Credit As Percentage Of Total Letters Of Credit WatchListLettersOfCreditAsPercentageOfTotalLettersOfCredit	0.014
CY2018Q4	cma	Watch List Letters Of Credit As Percentage Of Total Letters Of Credit WatchListLettersOfCreditAsPercentageOfTotalLettersOfCredit	0.015
CY2019Q2	cma	Notional Amount Of Derivative Credit Risk Participation Agreements NotionalAmountOfDerivativeCreditRiskParticipationAgreements	720000000	USD
CY2018Q4	cma	Notional Amount Of Derivative Credit Risk Participation Agreements NotionalAmountOfDerivativeCreditRiskParticipationAgreements	703000000	USD
CY2019Q2	us-gaap	Credit Derivative Maximum Exposure Undiscounted CreditDerivativeMaximumExposureUndiscounted	21000000	USD
CY2019Q2	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	166000000	USD
	us-gaap	Variable Interest Entity Financial Or Other Support Amount VariableInterestEntityFinancialOrOtherSupportAmount	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	0	USD
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	6558000000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	6463000000	USD
CY2019Q2	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9000000	USD
CY2018Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	8000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-138000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-101000000	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	229000000	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 Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	54000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-46000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	175000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-151000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-8000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-2000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-6000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	181000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-151000000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	43000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-251000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	0	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	51000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	40000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	40000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	0	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-471000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-350000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-21000000	USD
	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 Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-13000000	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	-14000000	USD
	cma	Other Comprehensive Income Loss Reclassification Adjustment Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Defined Benefit Cost Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax	8000000	USD
	cma	Other Comprehensive Income Loss Reclassification Adjustment Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Defined Benefit Cost Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax	16000000	USD
	cma	Other Comprehensive Income Loss Reclassification Adjustment Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Defined Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax	2000000	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
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-12000000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-465000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-338000000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-382000000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-589000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	298000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	326000000	USD
	us-gaap	Profit Loss ProfitLoss	637000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
CY2019Q2	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	1000000	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	3000000	USD
	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	4000000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	297000000	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	634000000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	603000000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	152000000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	155000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.95
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.10
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.52
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	152000000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	155000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171000000	shares
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2018Q2	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000000	shares
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	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	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1000000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	153000000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	174000000	shares
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.06
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.46
CY2019Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	15000000	USD
CY2019Q2	us-gaap	Decrease In Unrecognized Tax Benefits Is Reasonably Possible DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible	1000000	USD
CY2019Q2	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	104000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	166000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	62000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	4000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	3000000	USD
CY2019Q2	us-gaap	Legal Fees LegalFees	4000000	USD
	us-gaap	Legal Fees LegalFees	5000000	USD
	us-gaap	Legal Fees LegalFees	7000000	USD
	cma	Number Of Major Business Segments NumberOfMajorBusinessSegments	3	segments
	cma	Number Of Major Business Segments NumberOfMajorBusinessSegments	3	segments
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	603000000	USD
CY2019Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	44000000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	250000000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	424000000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	87000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	298000000	USD
CY2019Q2	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	33000000	USD
CY2019Q2	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	71252000000	USD
CY2019Q2	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	50963000000	USD
CY2019Q2	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	54995000000	USD
CY2019Q2	cma	Return On Average Assets ReturnOnAverageAssets	0.0168
CY2019Q2	cma	Efficiency Ratio EfficiencyRatio	0.4965
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	590000000	USD
CY2018Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-29000000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	248000000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	448000000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	93000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	326000000	USD
CY2018Q2	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	-3000000	USD
CY2018Q2	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70520000000	USD
CY2018Q2	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	49225000000	USD
CY2018Q2	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	55830000000	USD
CY2018Q2	cma	Return On Average Assets ReturnOnAverageAssets	0.0185
CY2018Q2	cma	Efficiency Ratio EfficiencyRatio	0.5324
CY2018Q2	cma	Discretetaxbenefits Discretetaxbenefits	3000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1209000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	31000000	USD
	us-gaap	Noninterest Income NoninterestIncome	488000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	857000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	172000000	USD
	us-gaap	Profit Loss ProfitLoss	637000000	USD
	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	44000000	USD
	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70515000000	USD
	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	50323000000	USD
	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	54498000000	USD
	cma	Return On Average Assets ReturnOnAverageAssets	0.0182
	cma	Efficiency Ratio EfficiencyRatio	0.5023
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1139000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-17000000	USD
	us-gaap	Noninterest Income NoninterestIncome	492000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	894000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	147000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	25000000	USD
	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70423000000	USD
	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	48825000000	USD
	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	55959000000	USD
	cma	Return On Average Assets ReturnOnAverageAssets	0.0174
	cma	Efficiency Ratio EfficiencyRatio	0.5474
	cma	Discretetaxbenefits Discretetaxbenefits	11000000	USD
	cma	Discretetaxbenefits Discretetaxbenefits	25000000	USD
	cma	Number Of Geographic Markets NumberOfGeographicMarkets	3	markets
	cma	Number Of Geographic Markets NumberOfGeographicMarkets	3	markets
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	603000000	USD
CY2019Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	44000000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	250000000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	424000000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	87000000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	298000000	USD
CY2019Q2	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	33000000	USD
CY2019Q2	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	71252000000	USD
CY2019Q2	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	50963000000	USD
CY2019Q2	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	54995000000	USD
CY2019Q2	cma	Return On Average Assets ReturnOnAverageAssets	0.0168
CY2019Q2	cma	Efficiency Ratio EfficiencyRatio	0.4965
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	590000000	USD
CY2018Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-29000000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	248000000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	448000000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	93000000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	326000000	USD
CY2018Q2	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	-3000000	USD
CY2018Q2	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70520000000	USD
CY2018Q2	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	49225000000	USD
CY2018Q2	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	55830000000	USD
CY2018Q2	cma	Return On Average Assets ReturnOnAverageAssets	0.0185
CY2018Q2	cma	Efficiency Ratio EfficiencyRatio	0.5324
CY2018Q2	cma	Discretetaxbenefits Discretetaxbenefits	3000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1209000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	31000000	USD
	us-gaap	Noninterest Income NoninterestIncome	488000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	857000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	172000000	USD
	us-gaap	Profit Loss ProfitLoss	637000000	USD
	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	44000000	USD
	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70515000000	USD
	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	50323000000	USD
	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	54498000000	USD
	cma	Return On Average Assets ReturnOnAverageAssets	0.0182
	cma	Efficiency Ratio EfficiencyRatio	0.5023
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1139000000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-17000000	USD
	us-gaap	Noninterest Income NoninterestIncome	492000000	USD
	us-gaap	Noninterest Expense NoninterestExpense	894000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	147000000	USD
	us-gaap	Profit Loss ProfitLoss	607000000	USD
	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	25000000	USD
	cma	Segment Reporting Average Assets SegmentReportingAverageAssets	70423000000	USD
	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	48825000000	USD
	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	55959000000	USD
	cma	Return On Average Assets ReturnOnAverageAssets	0.0174
	cma	Efficiency Ratio EfficiencyRatio	0.5474
	cma	Discretetaxbenefits Discretetaxbenefits	11000000	USD
	cma	Discretetaxbenefits Discretetaxbenefits	25000000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	189000000	USD
CY2019Q2	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	61000000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	250000000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	186000000	USD
CY2018Q2	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	62000000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	248000000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	373000000	USD
	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	115000000	USD
	us-gaap	Noninterest Income NoninterestIncome	488000000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	375000000	USD
	cma	Othersourcesofnoninterestincome Othersourcesofnoninterestincome	117000000	USD
	us-gaap	Noninterest Income NoninterestIncome	492000000	USD
CY2019Q2	us-gaap	Lease Cost LeaseCost	19000000	USD
CY2019Q2	us-gaap	Operating Lease Expense OperatingLeaseExpense	16000000	USD
CY2019Q2	us-gaap	Variable Lease Cost VariableLeaseCost	3000000	USD
	us-gaap	Lease Cost LeaseCost	38000000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	31000000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	7000000	USD
CY2019Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	329000000	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	366000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Discount Rate LesseeOperatingLeaseDiscountRate	0.0388
CY2019Q2	cma	New Rightof Use Assets NewRightofUseAssets	26000000	USD
CY2019Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	17000000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	33000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	27000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	64000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	58000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	49000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	42000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	199000000	USD
CY2019Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	439000000	USD
	cma	Operatingleaseimputedinterest Operatingleaseimputedinterest	-73000000	USD
CY2019Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	366000000	USD
CY2019Q2	us-gaap	Sales Type Lease Lease Income SalesTypeLeaseLeaseIncome	3000000	USD
	us-gaap	Sales Type Lease Lease Income SalesTypeLeaseLeaseIncome	6000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable SalesTypeAndDirectFinancingLeasesLeaseReceivable	360000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Remainder Of Fiscal Year SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear	41000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	64000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	52000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	88000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Five Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears	43000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Thereafter SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter	31000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	319000000	USD
CY2019Q2	cma	Sales Typeand Direct Financing Leases Unguaranteed Residual Asset SalesTypeandDirectFinancingLeasesUnguaranteedResidualAsset	63000000	USD
CY2019Q2	us-gaap	Deferred Discounts Finance Charges And Interest Included In Receivables DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables	22000000	USD
CY2019Q2	us-gaap	Sales Type And Direct Financing Leases Lease Receivable SalesTypeAndDirectFinancingLeasesLeaseReceivable	360000000	USD

Files In Submission

Name	View Source	Status
0000028412-19-000102-index-headers.html	Edgar Link	pending
0000028412-19-000102-index.html	Edgar Link	pending
0000028412-19-000102.txt	Edgar Link	pending
0000028412-19-000102-xbrl.zip	Edgar Link	pending
cma-20190630.xsd	Edgar Link	pending
cma-20190630_cal.xml	Edgar Link	unprocessable
cma-20190630_def.xml	Edgar Link	unprocessable
cma-20190630_lab.xml	Edgar Link	unprocessable
cma-20190630_pre.xml	Edgar Link	unprocessable
cma-2019q210q.htm	Edgar Link	pending
cma-2019q210q_ex311.htm	Edgar Link	pending
cma-2019q210q_ex312.htm	Edgar Link	pending
cma-2019q210q_ex32.htm	Edgar Link	pending
cma-2019q210q_htm.xml	Edgar Link	completed
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$CMA
COMERICA INC /NEW/ Stock $cma

2019 Q2 Form 10-Q Financial Statement

#000002841219000102 Filed on August 01, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMA COMERICA INC /NEW/ Stock $cma

2019 Q2 Form 10-Q Financial Statement

#000002841219000102 Filed on August 01, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMA
COMERICA INC /NEW/ Stock $cma