$CMA
COMERICA INC /NEW/ Stock $cma

$cma Overview Financials Valuation SEC Filings Company Website

2010 Q4 Form 10-K Financial Statement

#000002841212000031 Filed on February 21, 2012

Income Statement

Concept	2010 Q4	2010 Q3	2010 Q2
Revenue	$445.0M	$456.0M	$476.0M
YoY Change
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	$30.00M	$32.00M	$30.00M
YoY Change	-3.23%	6.67%	-3.23%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$40.00M	$52.00M	$54.00M
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$126.0M	$66.00M	$93.00M
YoY Change	-277.46%	-760.0%	-326.83%
Income Tax	$30.00M	$7.000M	$23.00M
% Of Pretax Income	23.81%	10.61%	24.73%
Net Earnings	$96.00M	$59.00M	$70.00M
YoY Change	-431.03%	210.53%	288.89%
Net Earnings / Revenue	21.57%	12.94%	14.71%
Basic Earnings Per Share	$0.54	$0.34	$0.40
Diluted Earnings Per Share	$0.53	$0.33	$0.39
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2010 Q4	2010 Q3	2010 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$2.083B
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	$630.0M	$639.0M	$634.0M
YoY Change	-2.17%	-2.74%	-4.95%
Goodwill	$150.0M
YoY Change	0.0%
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	$53.67B	$55.00B	$55.89B
YoY Change	-9.42%	-7.7%	-12.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$1.126B	$1.085B	$1.048B
YoY Change	10.18%	-13.34%	-29.09%
Deferred Revenue
YoY Change
Short-Term Debt	$130.0M	$179.0M	$200.0M
YoY Change	-71.86%	-57.88%	-59.18%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.126B	$1.085B	$1.048B
YoY Change	10.18%	-13.34%	-29.09%
LONG-TERM LIABILITIES
Long-Term Debt	$6.138B	$7.239B	$9.041B
YoY Change	-44.5%	-35.66%	-33.38%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$6.138B	$7.239B	$9.041B
YoY Change	-44.5%	-35.66%	-33.38%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.126B	$1.085B	$1.048B
Total Long-Term Liabilities	$6.138B	$7.239B	$9.041B
Total Liabilities	$47.87B	$49.15B	$50.09B
YoY Change	-8.32%	-6.48%	-11.4%
SHAREHOLDERS EQUITY
Retained Earnings	$5.247B
YoY Change
Common Stock	$2.500B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.565B
YoY Change
Treasury Stock Shares	27.34M shares
Shareholders Equity	$5.793B	$5.857B	$5.792B
YoY Change
Total Liabilities & Shareholders Equity	$53.67B	$55.00B	$55.89B
YoY Change	-9.42%	-7.7%	-12.17%

Cashflow Statement

Concept	2010 Q4	2010 Q3	2010 Q2
OPERATING ACTIVITIES
Net Income	$96.00M	$59.00M	$70.00M
YoY Change	-431.03%	210.53%	288.89%
Depreciation, Depletion And Amortization	$30.00M	$32.00M	$30.00M
YoY Change	-3.23%	6.67%	-3.23%
Cash From Operating Activities	$291.0M	$255.0M	$431.0M
YoY Change	-1264.0%	47.4%	124.48%
INVESTING ACTIVITIES
Capital Expenditures	-$27.00M	-$29.00M	-$19.00M
YoY Change	35.0%	70.59%	5.56%
Acquisitions
YoY Change
Other Investing Activities	-$944.0M	$645.0M	$398.0M
YoY Change	-136.43%	-62.7%	-92.06%
Cash From Investing Activities	-$971.0M	$616.0M	$379.0M
YoY Change	-137.77%	-64.02%	-92.41%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.231B	-1.102B	-1.173B
YoY Change	-2422.64%	-72.5%	-67.01%
NET CHANGE
Cash From Operating Activities	291.0M	255.0M	431.0M
Cash From Investing Activities	-971.0M	616.0M	379.0M
Cash From Financing Activities	-1.231B	-1.102B	-1.173B
Net Change In Cash	-1.911B	-231.0M	-363.0M
YoY Change	-173.53%	-89.11%	-122.27%
FREE CASH FLOW
Cash From Operating Activities	$291.0M	$255.0M	$431.0M
Capital Expenditures	-$27.00M	-$29.00M	-$19.00M
Free Cash Flow	$318.0M	$284.0M	$450.0M
YoY Change	-6460.0%	49.47%	114.29%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2009	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	5000000	USD
CY2010	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-26000000	USD
CY2011	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-39000000	USD
CY2010Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	743000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	776000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-356000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-389000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-336000000	USD
CY2011Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	15000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2170000000	USD
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1481000000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	37000000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	32000000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	32000000	USD
CY2010	us-gaap	Advertising Expense AdvertisingExpense	30000000	USD
CY2011	us-gaap	Advertising Expense AdvertisingExpense	28000000	USD
CY2009	us-gaap	Advertising Expense AdvertisingExpense	29000000	USD
CY2009	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	32000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	37000000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	32000000	USD
CY2011	us-gaap	Allowance For Loan And Lease Losses Foreign Currency Translation AllowanceForLoanAndLeaseLossesForeignCurrencyTranslation	0	USD
CY2009	us-gaap	Allowance For Loan And Lease Losses Foreign Currency Translation AllowanceForLoanAndLeaseLossesForeignCurrencyTranslation	1000000	USD
CY2010	us-gaap	Allowance For Loan And Lease Losses Foreign Currency Translation AllowanceForLoanAndLeaseLossesForeignCurrencyTranslation	0	USD
CY2010	us-gaap	Allowance For Loan And Lease Losses Provision For Loss Net AllowanceForLoanAndLeaseLossesProvisionForLossNet	480000000	USD
CY2009	us-gaap	Allowance For Loan And Lease Losses Provision For Loss Net AllowanceForLoanAndLeaseLossesProvisionForLossNet	1082000000	USD
CY2011	us-gaap	Allowance For Loan And Lease Losses Provision For Loss Net AllowanceForLoanAndLeaseLossesProvisionForLossNet	153000000	USD
CY2011Q4	us-gaap	Amount Available For Dividend Distribution Without Prior Approval From Regulatory Agency AmountAvailableForDividendDistributionWithoutPriorApprovalFromRegulatoryAgency	496000000	USD
CY2010Q4	us-gaap	Assets Assets	53667000000	USD
CY2011Q4	us-gaap	Assets Assets	61008000000	USD
CY2011Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	10104000000	USD
CY2010Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	7560000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	9901000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	7538000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	2176000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	681000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	337000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1702000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	344000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	474000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	151000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	152000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	270000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	278000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	8898000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	9107000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	9385000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	66000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	66000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	9603000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	14000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	243000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	3000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	22000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	245000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	13000000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	8000000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	2000000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	10000000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	21000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	76000000	USD
CY2011Q4	us-gaap	Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions	199
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	37000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	19000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1	21000000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1	76000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	2000000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	39000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	224000000	USD
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	98000000	USD
CY2011Q4	us-gaap	Average Term Of Credit Risk Derivatives AverageTermOfCreditRiskDerivatives	2.5
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CY2010	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	40000000	USD
CY2011	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	37000000	USD
CY2011	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	22000000	USD
CY2009	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	31000000	USD
CY2010	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	25000000	USD
CY2010Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	778000000	USD
CY2011Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	830000000	USD
CY2011Q3	us-gaap	Business Acquisition Effective Date Of Acquisition BusinessAcquisitionEffectiveDateOfAcquisition	July 28, 2011
CY2011Q3	us-gaap	Business Acquisition Equity Interests Issued Or Issuable Number Of Shares Issued BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued	24283711	shares
CY2011Q3	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Amount BusinessAcquisitionPurchasePriceAllocationGoodwillAmount	485000000	USD
CY2011Q3	us-gaap	Business Combination Consideration Transferred BusinessCombinationConsiderationTransferred	803000000	USD
CY2010Q1	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Asset BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationAsset	35000000	USD
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CY2011Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	318000000	USD
CY2011Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	34000000	USD
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CY2011Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	5100000000	USD
CY2010Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.080
CY2011Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.080
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CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3556000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2083000000	USD
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CY2010Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	668000000	USD
CY2010	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	17000000	USD
CY2011	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
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CY2011	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	1000000	USD
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CY2011Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Allowance For Loan Losses CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses	0	USD
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CY2011Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	87000000	USD
CY2011Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance	234000000	USD
CY2011	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments ChangeInUnrealizedGainLossOnFairValueHedgingInstruments	72000000	USD
CY2010	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments ChangeInUnrealizedGainLossOnFairValueHedgingInstruments	77000000	USD
CY2010Q2	us-gaap	Class Of Warrant Or Right Exercise Price Of Warrants Or Rights ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights	29.40
CY2010Q2	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	11500000	shares
CY2010Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	11500000	shares
CY2011Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	85000000	USD
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CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	325000000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	325000000	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	203878110	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	228164824	shares
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	1019000000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	1141000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	224000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	426000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-10000000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	239000000	USD
CY2009	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-28000000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	42000000	USD
CY2009	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6000000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	9000000	USD
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6000000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	58000000	USD
CY2009	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-19000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	257000000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7000000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	12000000	USD
CY2009	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3000000	USD
CY2009	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-102000000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	73000000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-202000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	79000000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-112000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-202000000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	6000000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	0	USD
CY2009	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-10000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	696000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	708000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	395000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	383000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	46000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	65000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	221000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	202000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	14000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	14000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	54000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	51000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	15000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	0	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	328000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	315000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-325000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	-301000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	-262000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	-287000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-36000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	-32000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Net Gains Losses DefinedBenefitPlanAmortizationOfNetGainsLosses	60000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Net Prior Service Cost Credit DefinedBenefitPlanAmortizationOfNetPriorServiceCostCredit	3000000	USD
CY2010Q1	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	27000000	USD
CY2010Q1	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	17000000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	0	USD
CY2009	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	2000000	USD
CY2010	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	27000000	USD
CY2009	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	1000000	USD
CY2010	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	10000000	USD
CY2011	us-gaap	Defined Benefit Plan Amortization Of Net Transition Asset Obligation DefinedBenefitPlanAmortizationOfNetTransitionAssetObligation	4000000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation	-4000000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents	0	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	5000000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	0	USD
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMaximum	0.45
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMinimum	0.35
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMaximum	0.65
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMinimum	0.55
CY2011Q4	us-gaap	Deposits Deposits	47755000000	USD
CY2010Q4	us-gaap	Deposits Deposits	40471000000	USD
CY2011Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1524000000	USD
CY2010Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1397000000	USD
CY2009	us-gaap	Depreciation And Amortization DepreciationAndAmortization	122000000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	122000000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	124000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	757000000	USD
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	696000000	USD
CY2010Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	400000000	USD
CY2011Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	403000000	USD
CY2011	us-gaap	Derivative Net Hedge Ineffectiveness Gain Loss DerivativeNetHedgeIneffectivenessGainLoss	1000000	USD
CY2010	us-gaap	Derivative Net Hedge Ineffectiveness Gain Loss DerivativeNetHedgeIneffectivenessGainLoss	-3000000	USD
CY2011Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	100000000	USD
CY2009	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	5000000	USD
CY2010	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	USD
CY2011	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	0	USD
CY2009	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	30000000	USD
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	44000000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	75000000	USD
CY2010Q4	us-gaap	Dividends Preferred Stock DividendsPreferredStock	0	USD
CY2010Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	0	USD
CY2010Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	123000000	USD
CY2010Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	0	USD
CY2010	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	38000000	USD
CY2009	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	113000000	USD
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.79
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.11
CY2010Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.46
CY2010Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.40
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.48
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.79
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.09
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2010Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2010Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.46
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.48
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.57
CY2009Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	792000000	USD
CY2009	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.137
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.259
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.175
CY2009	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Life Insurance EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance	-0.027
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Life Insurance EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance	0.120
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Life Insurance EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance	-0.049
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.010
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.030
CY2009	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.039
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.016
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
CY2011Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	46000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition	3.2
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12000000	USD
CY2009	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2009	us-gaap	Equipment Expense EquipmentExpense	62000000	USD
CY2011	us-gaap	Equipment Expense EquipmentExpense	66000000	USD
CY2010	us-gaap	Equipment Expense EquipmentExpense	63000000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1000000	USD
CY2009	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1000000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1000000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1000000	USD
CY2009	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
CY2009Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	-193000000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	-197000000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	-153000000	USD
CY2011	us-gaap	Financing Receivable Allowance For Credit Losses Recoveries FinancingReceivableAllowanceForCreditLossesRecoveries	-95000000	USD
CY2009	us-gaap	Financing Receivable Allowance For Credit Losses Recoveries FinancingReceivableAllowanceForCreditLossesRecoveries	-27000000	USD
CY2010	us-gaap	Financing Receivable Allowance For Credit Losses Recoveries FinancingReceivableAllowanceForCreditLossesRecoveries	-63000000	USD
CY2011Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	1000000	USD
CY2010Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	1000000	USD
CY2010	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	62000000	USD
CY2011	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	43000000	USD
CY2009	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	90000000	USD
CY2010Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	128000000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	92000000	USD
CY2010Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	59000000	USD
CY2011Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	85000000	USD
CY2010	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	208000000	USD
CY2011	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	208000000	USD
CY2009	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	228000000	USD
CY2011	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	151000000	USD
CY2010	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	154000000	USD
CY2009	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	161000000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	704000000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	573000000	USD
CY2009	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	895000000	USD
CY2010	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	627000000	USD
CY2011	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	423000000	USD
CY2009Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	41175000000	USD
CY2011Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	41821000000	USD
CY2010Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	39262000000	USD
CY2009Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	986000000	USD
CY2011Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	771000000	USD
CY2010Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	974000000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	209000000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	198000000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	83000000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	66000000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	62000000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	58000000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	38813000000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	41486000000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	343000000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	333000000	USD
CY2010Q4	us-gaap	Foreclosed Assets ForeclosedAssets	112000000	USD
CY2011Q4	us-gaap	Foreclosed Assets ForeclosedAssets	94000000	USD
CY2011Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	527000000	USD
CY2010Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	503000000	USD
CY2009	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	8000000	USD
CY2010	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
CY2011	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	0	USD
CY2011	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	1000000	USD
CY2010	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	1000000	USD
CY2009	us-gaap	Gain Loss On Foreign Currency Derivative Instruments Not Designated As Hedging Instruments GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments	1000000	USD
CY2011	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	14000000	USD
CY2010	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	3000000	USD
CY2009	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	243000000	USD
CY2010Q2	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	1000000	USD
CY2010Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
CY2010Q4	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	0	USD
CY2010Q1	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	2000000	USD
CY2011Q1	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	2000000	USD
CY2011Q3	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	12000000	USD
CY2011Q4	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	-4000000	USD
CY2011Q2	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	4000000	USD
CY2011	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-10000000	USD
CY2010	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-2000000	USD
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.40
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.34
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.54
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.09
CY2009	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.80
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.78
CY2011Q4	us-gaap	Goodwill Goodwill	635000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	150000000	USD
CY2009Q4	us-gaap	Goodwill Goodwill	150000000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	485000000	USD
CY2011	us-gaap	Guarantees Indemnifications And Warranties Policies GuaranteesIndemnificationsAndWarrantiesPolicies	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Financial Guarantees</font></div><div style="line-height:120%;text-align:justify;text-indent:49px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain guarantee contracts or indemnification agreements that contingently require the Corporation, as guarantor, to make payments to the guaranteed party are initially measured at fair value and included in “accrued expenses and other liabilities” on the consolidated balance sheets. The subsequent accounting for the liability depends on the nature of the underlying guarantee. The release from risk is accounted for under a particular guarantee when the guarantee expires or is settled, or by a systematic and rational amortization method.</font></div></div>
CY2011	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	865000000	USD
CY2010	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	987000000	USD
CY2011	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	10000000	USD
CY2010	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	8000000	USD
CY2011Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	771000000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	974000000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	197000000	USD
CY2011Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	153000000	USD
CY2011Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	1078000000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	1477000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	18000000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	16000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	393000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	260000000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	59000000	USD
CY2010Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	35000000	USD
CY2010Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	96000000	USD
CY2010Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	70000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.79
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.11
CY2009	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.80
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.57
CY2010Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.39
CY2010Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.57
CY2010Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.53
CY2010Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.33
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	1000000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	17000000	USD
CY2010Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2010Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2010Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	0	USD
CY2010Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	17000000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.11
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.10
CY2009	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	137000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	55000000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-131000000	USD
CY2010Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7000000	USD
CY2010Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-5000000	USD
CY2010Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23000000	USD
CY2010Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30000000	USD
CY2011Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35000000	USD
CY2011Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	41000000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28000000	USD
CY2011Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	33000000	USD
CY2010	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	55000000	USD
CY2009	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	-131000000	USD
CY2011	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	137000000	USD
CY2009	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-40000000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	185000000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	110000000	USD
CY2009	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-14000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-14000000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-15000000	USD
CY2009	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-3000000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-3000000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2000000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7000000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9000000	USD
CY2009	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-5000000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	73000000	USD
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	251000000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	108000000	USD
CY2010	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	57000000	USD
CY2009	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-311000000	USD
CY2011	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	59000000	USD
CY2011	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	3296000000	USD
CY2010	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	771000000	USD
CY2009	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-2010000000	USD
CY2009	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-4000000	USD
CY2010	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	-7000000	USD
CY2011	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	11000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-62000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-15000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-113000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	445000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-486000000	USD
CY2010	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	10000000	USD
CY2011	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-3000000	USD
CY2009	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-16000000	USD
CY2010	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1853000000	USD
CY2011	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1809000000	USD
CY2009	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	2105000000	USD
CY2010Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	476000000	USD
CY2010Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	445000000	USD
CY2010Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	476000000	USD
CY2010Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	456000000	USD
CY2011Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	481000000	USD
CY2011Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	431000000	USD
CY2011Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	434000000	USD
CY2011Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	463000000	USD
CY2011	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	233000000	USD
CY2009	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	329000000	USD
CY2010	us-gaap	Interest And Dividend Income Securities Available For Sale InterestAndDividendIncomeSecuritiesAvailableForSale	226000000	USD
CY2011	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	1564000000	USD
CY2009	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	1767000000	USD
CY2010	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	1617000000	USD
CY2010Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	24933000000	USD
CY2011Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	27991000000	USD
CY2010Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	1415000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	156000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	207000000	USD
CY2009	us-gaap	Interest Expense InterestExpense	538000000	USD
CY2010Q3	us-gaap	Interest Expense InterestExpense	52000000	USD
CY2010Q1	us-gaap	Interest Expense InterestExpense	61000000	USD
CY2011Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	2574000000	USD
CY2010Q4	us-gaap	Interest Expense InterestExpense	40000000	USD
CY2010Q2	us-gaap	Interest Expense InterestExpense	54000000	USD
CY2011Q1	us-gaap	Interest Expense InterestExpense	39000000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	40000000	USD
CY2011Q4	us-gaap	Interest Expense InterestExpense	37000000	USD
CY2011Q2	us-gaap	Interest Expense InterestExpense	40000000	USD
CY2011	us-gaap	Interest Expense Deposits InterestExpenseDeposits	90000000	USD
CY2009	us-gaap	Interest Expense Deposits InterestExpenseDeposits	372000000	USD
CY2010	us-gaap	Interest Expense Deposits InterestExpenseDeposits	115000000	USD
CY2010	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	91000000	USD
CY2009	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	164000000	USD
CY2011	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	66000000	USD
CY2009	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	2000000	USD
CY2010	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	1000000	USD
CY2011	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	0	USD
CY2011	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1500000000	USD
CY2010	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	1166000000	USD
CY2009	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	485000000	USD
CY2009	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1567000000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1653000000	USD
CY2010	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	1646000000	USD
CY2010Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	404000000	USD
CY2010Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	422000000	USD
CY2010Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	415000000	USD
CY2010Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	405000000	USD
CY2011Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	444000000	USD
CY2011Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	391000000	USD
CY2011Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	423000000	USD
CY2011Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	395000000	USD
CY2010	us-gaap	Interest Paid InterestPaid	227000000	USD
CY2011	us-gaap	Interest Paid InterestPaid	151000000	USD
CY2009	us-gaap	Interest Paid InterestPaid	619000000	USD
CY2011Q3	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	83000000	USD
CY2011Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	30000000	USD
CY2010	us-gaap	Labor And Related Expense LaborAndRelatedExpense	919000000	USD
CY2009	us-gaap	Labor And Related Expense LaborAndRelatedExpense	897000000	USD
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	975000000	USD
CY2011Q4	us-gaap	Land Land	94000000	USD
CY2010Q4	us-gaap	Land Land	92000000	USD
CY2009	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	84000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	82000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	83000000	USD
CY2011	us-gaap	Legal Fees LegalFees	43000000	USD
CY2009	us-gaap	Legal Fees LegalFees	37000000	USD
CY2010	us-gaap	Legal Fees LegalFees	35000000	USD
CY2011Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	5500000000	USD
CY2010Q4	us-gaap	Liabilities Liabilities	47874000000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	54140000000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	53667000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	61008000000	USD
CY2011Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	14000000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	726000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	901000000	USD
CY2008Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	770000000	USD
CY2009Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	985000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	370000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	334000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	7000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	13000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	860000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	1080000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	40236000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	42679000000	USD
CY2009Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	42161000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	39335000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-7366000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1526000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	41953000000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	288000000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	198000000	USD
CY2011	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	607000000	USD
CY2011	us-gaap	Loans And Leases Receivable Related Parties Collections LoansAndLeasesReceivableRelatedPartiesCollections	697000000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	4944000000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	6138000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	867000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	167000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	650000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	606000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	1256000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1056000000	USD
CY2011Q4	us-gaap	Maximum Potential Future Exposure On Credit Risk Derivatives MaximumPotentialFutureExposureOnCreditRiskDerivatives	12000000	USD
CY2010Q4	us-gaap	Maximum Potential Future Exposure On Credit Risk Derivatives MaximumPotentialFutureExposureOnCreditRiskDerivatives	12000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-6026000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1206000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	123000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	58000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	81000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	95000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	117000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	403000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	9469000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-955000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1286000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	91000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	902000000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	153000000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-118000000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	389000000	USD
CY2010Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	59000000	USD
CY2010Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	69000000	USD
CY2010Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	95000000	USD
CY2010Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-71000000	USD
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	95000000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	97000000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	102000000	USD
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	95000000	USD
CY2010Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	15538000000	USD
CY2011Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	19764000000	USD
CY2009	us-gaap	Noninterest Expense NoninterestExpense	1650000000	USD
CY2011	us-gaap	Noninterest Expense NoninterestExpense	1762000000	USD
CY2010	us-gaap	Noninterest Expense NoninterestExpense	1640000000	USD
CY2010Q4	us-gaap	Noninterest Expense NoninterestExpense	437000000	USD
CY2010Q3	us-gaap	Noninterest Expense NoninterestExpense	402000000	USD
CY2010Q1	us-gaap	Noninterest Expense NoninterestExpense	404000000	USD
CY2010Q2	us-gaap	Noninterest Expense NoninterestExpense	397000000	USD
CY2011Q2	us-gaap	Noninterest Expense NoninterestExpense	409000000	USD
CY2011Q3	us-gaap	Noninterest Expense NoninterestExpense	460000000	USD
CY2011Q4	us-gaap	Noninterest Expense NoninterestExpense	478000000	USD
CY2011Q1	us-gaap	Noninterest Expense NoninterestExpense	415000000	USD
CY2010	us-gaap	Noninterest Income NoninterestIncome	789000000	USD
CY2011	us-gaap	Noninterest Income NoninterestIncome	792000000	USD
CY2009	us-gaap	Noninterest Income NoninterestIncome	1050000000	USD
CY2010	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	91000000	USD
CY2011	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	102000000	USD
CY2009	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	112000000	USD
CY2011Q4	us-gaap	Notional Amount Of Credit Risk Derivatives NotionalAmountOfCreditRiskDerivatives	394000000	USD
CY2010Q4	us-gaap	Notional Amount Of Credit Risk Derivatives NotionalAmountOfCreditRiskDerivatives	316000000	USD
CY2010Q4	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	18260000000	USD
CY2011Q4	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	17723000000	USD
CY2010	us-gaap	Occupancy Net OccupancyNet	162000000	USD
CY2011	us-gaap	Occupancy Net OccupancyNet	169000000	USD
CY2009	us-gaap	Occupancy Net OccupancyNet	162000000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	877000000	USD
CY2010Q4	us-gaap	Other Assets OtherAssets	3918000000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	4571000000	USD
CY2011	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	3000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease	-127000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-176000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-27000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-53000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	33000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plan Net Transition Asset Obligation Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlanNetTransitionAssetObligationRecognizedInNetPeriodicBenefitCostBeforeTax	4000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	42000000	USD
CY2009	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	9000000	USD
CY2010	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	10000000	USD
CY2011	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	12000000	USD
CY2010Q4	us-gaap	Other Liabilities OtherLiabilities	1135000000	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	1371000000	USD
CY2009	us-gaap	Other Noninterest Expense OtherNoninterestExpense	134000000	USD
CY2011	us-gaap	Other Noninterest Expense OtherNoninterestExpense	144000000	USD
CY2010	us-gaap	Other Noninterest Expense OtherNoninterestExpense	146000000	USD
CY2011Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	149000000	USD
CY2010Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	141000000	USD
CY2010	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-144000000	USD
CY2009	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-82000000	USD
CY2011	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-36000000	USD
CY2009	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-7317000000	USD
CY2011	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	695000000	USD
CY2010	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-1259000000	USD
CY2009	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-3000000	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2000000	USD
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	13000000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	116000000	USD
CY2009	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1000000	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4000000	USD
CY2009	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2011	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2010	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	2250000000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	34000000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	73000000	USD
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	72000000	USD
CY2009	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	113000000	USD
CY2010	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	38000000	USD
CY2011	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2410000000	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	9011000000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	4453000000	USD
CY2010	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	0	USD
CY2011	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	26000000	USD
CY2009	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	0	USD
CY2009	us-gaap	Pension Contributions PensionContributions	100000000	USD
CY2011	us-gaap	Pension Contributions PensionContributions	0	USD
CY2010	us-gaap	Pension Contributions PensionContributions	0	USD
CY2011Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	15000000000	USD
CY2011Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Other Arrangements PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForOtherArrangements	22000000000	USD
CY2009	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	0	USD
CY2010	us-gaap	Preferred Stock Accretion Of Redemption Discount PreferredStockAccretionOfRedemptionDiscount	0	USD
CY2011	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2010	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	123000000	USD
CY2009	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	134000000	USD
CY2010	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2010Q1	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	94000000	USD
CY2010	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2011	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	0	USD
CY2009	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	7000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	849000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	298000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2009	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	0	USD
CY2010	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	5000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	4000000	USD
CY2009	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2253000000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2779000000	USD
CY2010	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2152000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	13000000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2000000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3000000	USD
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-332000000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-82000000	USD
CY2009	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-1287000000	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	8785000000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	784000000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	151000000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	33000000	USD
CY2010	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	0	USD
CY2009	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	0	USD
CY2011	us-gaap	Profit Loss ProfitLoss	393000000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	277000000	USD
CY2009	us-gaap	Profit Loss ProfitLoss	17000000	USD
CY2010Q4	us-gaap	Profit Loss ProfitLoss	96000000	USD
CY2010Q1	us-gaap	Profit Loss ProfitLoss	52000000	USD
CY2010Q2	us-gaap	Profit Loss ProfitLoss	70000000	USD
CY2010Q3	us-gaap	Profit Loss ProfitLoss	59000000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	96000000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	98000000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	103000000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	96000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1451000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1373000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	630000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	675000000	USD
CY2010Q4	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
CY2011	us-gaap	Restructuring Reserve Period Expense RestructuringReservePeriodExpense	75000000	USD
CY2011	us-gaap	Restructuring Reserve Settled With Cash RestructuringReserveSettledWithCash	49000000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5247000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5546000000	USD
CY2010	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	480000000	USD
CY2011	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	153000000	USD
CY2009	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1082000000	USD
CY2010Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	126000000	USD
CY2010Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	175000000	USD
CY2010Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	122000000	USD
CY2010Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	57000000	USD
CY2011Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	19000000	USD
CY2011Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	47000000	USD
CY2011Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	38000000	USD
CY2011Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	49000000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2610000000	USD
CY2009	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3683000000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1517000000	USD
CY2011	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2010	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	2680000000	USD
CY2009	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	197000000	USD
CY2011	us-gaap	Restructuring And Related Cost Expected Cost RestructuringAndRelatedCostExpectedCost	115000000	USD
CY2010	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	0	USD
CY2011	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	75000000	USD
CY2009	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	0	USD
CY2011Q4	us-gaap	Restructuring Reserve RestructuringReserve	26000000	USD
CY2011Q4	us-gaap	Segment Reporting Information Average Assets SegmentReportingInformationAverageAssets	56917000000	USD
CY2010Q4	us-gaap	Segment Reporting Information Average Assets SegmentReportingInformationAverageAssets	55553000000	USD
CY2009Q4	us-gaap	Segment Reporting Information Average Assets SegmentReportingInformationAverageAssets	62809000000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	32000000	USD
CY2009	us-gaap	Share Based Compensation ShareBasedCompensation	32000000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	37000000	USD
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	16000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	26000000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	19000000	USD
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0462
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0300
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0300
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6.4
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6.1
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6.1
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.58
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.40
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.38
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0308
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0373
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0343
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	15700000	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	5900000	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	11.58
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	11.07
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.55
CY2010Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	130000000	USD
CY2011Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	70000000	USD
CY2011Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	19000000	USD
CY2011	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	803000000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	849000000	USD
CY2010Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	880000000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2000000	USD
CY2009	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-3000000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2010	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	2250000000	USD
CY2010Q1	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	2250000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5793000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6868000000	USD
CY2008Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7152000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7029000000	USD
CY2009	us-gaap	Stockholders Equity Other StockholdersEquityOther	-2000000	USD
CY2010	us-gaap	Stockholders Equity Other StockholdersEquityOther	3000000	USD
CY2010Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.030
CY2011Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.030
CY2011Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05
CY2010Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	2400000000	USD
CY2011Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	2500000000	USD
CY2010Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.040
CY2011Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.040
CY2011Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.06
CY2011Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	90000000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	46000000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	60000000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	5152000000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	163000000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	645000000	USD
CY2011Q4	us-gaap	Time Deposits TimeDeposits	6156000000	USD
CY2011Q4	us-gaap	Time Deposits100000 Or More Foreign TimeDeposits100000OrMoreForeign	348000000	USD
CY2010Q4	us-gaap	Time Deposits100000 Or More Foreign TimeDeposits100000OrMoreForeign	432000000	USD
CY2011	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	69000000	USD
CY2009	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	114000000	USD
CY2010	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	104000000	USD
CY2011Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	39.40
CY2011Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	37.27
CY2011	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	27.12
CY2011Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.38
CY2011Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.17
CY2011Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.92
CY2011Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.23
CY2011Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.21
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	30831076	shares
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	27342518	shares
CY2011Q4	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	457000	shares
CY2011Q2	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	3000	shares
CY2011Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	2153000	shares
CY2011Q4	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1603000	shares
CY2011	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	4307000	shares
CY2011Q4	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1065000	shares
CY2011Q4	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	81000	shares
CY2011Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	548000	shares
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1633000000	USD
CY2010Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1565000000	USD
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	116000000	USD
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4000000	USD
CY2009	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1000000	USD
CY2010	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	1000000	USD
CY2009	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	1000000	USD
CY2011	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	4000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10000000	USD
CY2008Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	70000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	20000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	-1000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	-38000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	-12000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	9000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	2000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	1000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities	20000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	5000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	8000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	45000000	USD
CY2011Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	352000000	USD
CY2011	us-gaap	Variable Interest Entity Financial Or Other Support Amount VariableInterestEntityFinancialOrOtherSupportAmount	0	USD
CY2010	us-gaap	Variable Interest Entity Financial Or Other Support Amount VariableInterestEntityFinancialOrOtherSupportAmount	0	USD
CY2011Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	99000000	USD
CY2010Q2	us-gaap	Warrants And Rights Outstanding WarrantsAndRightsOutstanding	124000000	USD
CY2010	cma	Accretion Of Discount On Preferred Stock AccretionOfDiscountOnPreferredStock	5000000	USD
CY2010	cma	Accretion Of Discount On Receivables Acquired In Transfer AccretionOfDiscountOnReceivablesAcquiredInTransfer	0	USD
CY2011	cma	Accretion Of Discount On Receivables Acquired In Transfer AccretionOfDiscountOnReceivablesAcquiredInTransfer	53000000	USD
CY2009	cma	Accretion Of Discount On Receivables Acquired In Transfer AccretionOfDiscountOnReceivablesAcquiredInTransfer	0	USD
CY2010	cma	Accumulated Preferred Stock Dividends AccumulatedPreferredStockDividends	24000000	USD
CY2010Q4	cma	Acquired Treasury Stock Repurchase Authorization AcquiredTreasuryStockRepurchaseAuthorization	12600000	shares
CY2011Q4	cma	Allowance For Credit Losses Change In Method Of Calculating Impairment AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment	3000000	USD
CY2011Q4	cma	Allowance For Credit Losses Change In Method Of Calculating Impairment Incremental Amount AllowanceForCreditLossesChangeInMethodOfCalculatingImpairmentIncrementalAmount	1000000	USD
CY2011Q4	cma	Allowance For Off Balance Sheet Credit Losses AllowanceForOffBalanceSheetCreditLosses	26000000	USD
CY2010Q4	cma	Allowance For Off Balance Sheet Credit Losses AllowanceForOffBalanceSheetCreditLosses	35000000	USD
CY2011	cma	Annual Contribution To Individual Account Of Each Eligible Employee Maximum AnnualContributionToIndividualAccountOfEachEligibleEmployeeMaximum	0.08
CY2011	cma	Annual Contribution To Individual Account Of Each Eligible Employee Minimum AnnualContributionToIndividualAccountOfEachEligibleEmployeeMinimum	0.03
CY2011	cma	Ars Portfolio Redeemed Or Sold Since Acquisition Percentage ArsPortfolioRedeemedOrSoldSinceAcquisitionPercentage	0.65
CY2011Q4	cma	Auction Rate Portfolio Rated By Credit Rating Agencies AuctionRatePortfolioRatedByCreditRatingAgencies	0.94
CY2011	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	43762000000	USD
CY2010	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	39486000000	USD
CY2009	cma	Average Balance During Period Deposits AverageBalanceDuringPeriodDeposits	40091000000	USD
CY2011	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	40075000000	USD
CY2010	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	40517000000	USD
CY2010	cma	Average Reserve Requirement AverageReserveRequirement	311000000	USD
CY2011Q3	cma	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssets	304000000	USD
CY2009	cma	Average Balance During Period Loans And Leases Receivable Net Of Deferred Income AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome	46162000000	USD
CY2011	cma	Average Reserve Requirement AverageReserveRequirement	335000000	USD
CY2011Q3	cma	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilities	47000000	USD
CY2011Q3	cma	Business Combination Recognized Identifiable Assets Acquired Total BusinessCombinationRecognizedIdentifiableAssetsAcquiredTotal	4678000000	USD
CY2011Q3	cma	Business Combination Recognized Liabilities Assumed Total BusinessCombinationRecognizedLiabilitiesAssumedTotal	4360000000	USD
CY2011	cma	Card Fees CardFees	58000000	USD
CY2010	cma	Card Fees CardFees	58000000	USD
CY2009	cma	Card Fees CardFees	51000000	USD
CY2011Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit CarryingValueOfStandbyAndCommercialLettersOfCredit	89000000	USD
CY2010Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit CarryingValueOfStandbyAndCommercialLettersOfCredit	83000000	USD
CY2011Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Allowance For Credit Losses On Lending Related Commitments CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments	17000000	USD
CY2010Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Allowance For Credit Losses On Lending Related Commitments CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments	19000000	USD
CY2010Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Deferred Fees CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees	64000000	USD
CY2011Q4	cma	Carrying Value Of Standby And Commercial Letters Of Credit Included In Deferred Fees CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees	72000000	USD
CY2011Q4	cma	Carrying Value Of Unused Commitments To Extend Credit CarryingValueOfUnusedCommitmentsToExtendCredit	9000000	USD
CY2010Q4	cma	Carrying Value Of Unused Commitments To Extend Credit CarryingValueOfUnusedCommitmentsToExtendCredit	16000000	USD
CY2010	cma	Cash Dividends Paid To Parent Company By Bank Subsidiaries CashDividendsPaidToParentCompanyByBankSubsidiaries	28000000	USD
CY2011	cma	Cash Dividends Paid To Parent Company By Bank Subsidiaries CashDividendsPaidToParentCompanyByBankSubsidiaries	292000000	USD
CY2009	cma	Cash Dividends Paid To Parent Company By Bank Subsidiaries CashDividendsPaidToParentCompanyByBankSubsidiaries	49000000	USD
CY2011Q4	cma	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmount	87000000	USD
CY2010Q4	cma	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmount	0	USD
CY2009Q4	cma	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmount	0	USD
CY2011	cma	Change In Net Income Loss ChangeInNetIncomeLoss	116000000	USD
CY2011Q4	cma	Closing Stock Price Per Share ClosingStockPricePerShare	25.80
CY2009	cma	Commercial Lending Fees CommercialLendingFees	79000000	USD
CY2010	cma	Commercial Lending Fees CommercialLendingFees	95000000	USD
CY2011	cma	Commercial Lending Fees CommercialLendingFees	87000000	USD
CY2010Q4	cma	Deferred Tax Assets Auction Rate Securities DeferredTaxAssetsAuctionRateSecurities	12000000	USD
CY2011Q4	cma	Deferred Tax Assets Auction Rate Securities DeferredTaxAssetsAuctionRateSecurities	8000000	USD
CY2010Q4	cma	Deferred Tax Assets Deferred Loan Orgination Fees And Costs DeferredTaxAssetsDeferredLoanOrginationFeesAndCosts	30000000	USD
CY2011Q4	cma	Deferred Tax Assets Deferred Loan Orgination Fees And Costs DeferredTaxAssetsDeferredLoanOrginationFeesAndCosts	29000000	USD
CY2011Q4	cma	Deferred Tax Liabilities Employee Benefits DeferredTaxLiabilitiesEmployeeBenefits	0	USD
CY2010Q4	cma	Deferred Tax Liabilities Employee Benefits DeferredTaxLiabilitiesEmployeeBenefits	-5000000	USD
CY2011Q4	cma	Deferred Tax Liabilities Tax Interest DeferredTaxLiabilitiesTaxInterest	-3000000	USD
CY2010Q4	cma	Deferred Tax Liabilities Tax Interest DeferredTaxLiabilitiesTaxInterest	-1000000	USD
CY2011	cma	Defined Benefit Plan Defined Contributions By Employer DefinedBenefitPlanDefinedContributionsByEmployer	4000000	USD
CY2009	cma	Defined Benefit Plan Defined Contributions By Employer DefinedBenefitPlanDefinedContributionsByEmployer	3000000	USD
CY2010	cma	Defined Benefit Plan Defined Contributions By Employer DefinedBenefitPlanDefinedContributionsByEmployer	3000000	USD
CY2010Q4	cma	Defined Benefit Plan Fair Value Of Plan Investments DefinedBenefitPlanFairValueOfPlanInvestments	1471000000	USD
CY2011Q4	cma	Defined Benefit Plan Fair Value Of Plan Investments DefinedBenefitPlanFairValueOfPlanInvestments	1514000000	USD
CY2011	cma	Defined Benefit Plan Matching Cash Contributions By Employer Percent DefinedBenefitPlanMatchingCashContributionsByEmployerPercent	1.00
CY2009	cma	Defined Benefit Plan Matching Contributions By Employer DefinedBenefitPlanMatchingContributionsByEmployer	20000000	USD
CY2010	cma	Defined Benefit Plan Matching Contributions By Employer DefinedBenefitPlanMatchingContributionsByEmployer	19000000	USD
CY2011	cma	Defined Benefit Plan Matching Contributions By Employer DefinedBenefitPlanMatchingContributionsByEmployer	20000000	USD
CY2011	cma	Defined Benefit Plan Percentage Of Qualified Earnings Eligible For Matching DefinedBenefitPlanPercentageOfQualifiedEarningsEligibleForMatching	0.04
CY2010Q4	cma	Deposits Customer Certificates Deposits DepositsCustomerCertificatesDeposits	5482000000	USD
CY2011Q4	cma	Deposits Customer Certificates Deposits DepositsCustomerCertificatesDeposits	5808000000	USD
CY2010Q4	cma	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNow	17622000000	USD
CY2011Q4	cma	Deposits Money Market Deposits And Negotiable Order Of Withdrawal Now DepositsMoneyMarketDepositsAndNegotiableOrderOfWithdrawalNow	20311000000	USD
CY2010Q4	cma	Derivative Credit Valuation Adjustment For Counterparty Credit Risk DerivativeCreditValuationAdjustmentForCounterpartyCreditRisk	5000000	USD
CY2011Q4	cma	Derivative Credit Valuation Adjustment For Counterparty Credit Risk DerivativeCreditValuationAdjustmentForCounterpartyCreditRisk	4000000	USD
CY2011Q4	cma	Derivative Liability DerivativeLiability	6000000	USD
CY2010Q4	cma	Derivative Liability DerivativeLiability	1000000	USD
CY2010	cma	Effective Income Tax Rate Reconciliation Housing And Historic Credits EffectiveIncomeTaxRateReconciliationHousingAndHistoricCredits	-0.156
CY2011	cma	Effective Income Tax Rate Reconciliation Housing And Historic Credits EffectiveIncomeTaxRateReconciliationHousingAndHistoricCredits	-0.097
CY2009	cma	Effective Income Tax Rate Reconciliation Housing And Historic Credits EffectiveIncomeTaxRateReconciliationHousingAndHistoricCredits	0.402
CY2010	cma	Effective Income Tax Rate Reconciliation Interest On Income Tax Liabilities EffectiveIncomeTaxRateReconciliationInterestOnIncomeTaxLiabilities	0.010
CY2009	cma	Effective Income Tax Rate Reconciliation Interest On Income Tax Liabilities EffectiveIncomeTaxRateReconciliationInterestOnIncomeTaxLiabilities	0.109
CY2011	cma	Effective Income Tax Rate Reconciliation Interest On Income Tax Liabilities EffectiveIncomeTaxRateReconciliationInterestOnIncomeTaxLiabilities	-0.013
CY2009	cma	Effective Income Tax Rate Reconciliation Other Changes In Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationOtherChangesInUnrecognizedTaxBenefits	-0.011
CY2011	cma	Effective Income Tax Rate Reconciliation Other Changes In Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationOtherChangesInUnrecognizedTaxBenefits	0.032
CY2010	cma	Effective Income Tax Rate Reconciliation Other Changes In Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationOtherChangesInUnrecognizedTaxBenefits	0.006
CY2010	cma	Effective Income Tax Rate Reconciliation Termination Of Structured Leasing Transaction EffectiveIncomeTaxRateReconciliationTerminationOfStructuredLeasingTransaction	0.000
CY2009	cma	Effective Income Tax Rate Reconciliation Termination Of Structured Leasing Transaction EffectiveIncomeTaxRateReconciliationTerminationOfStructuredLeasingTransaction	0.098
CY2011	cma	Effective Income Tax Rate Reconciliation Termination Of Structured Leasing Transaction EffectiveIncomeTaxRateReconciliationTerminationOfStructuredLeasingTransaction	0.000
CY2011	cma	Efficiency Ratio EfficiencyRatio	0.7239
CY2010	cma	Efficiency Ratio EfficiencyRatio	0.6730
CY2009	cma	Efficiency Ratio EfficiencyRatio	0.6925
CY2009	cma	Employee Benefits Expense EmployeeBenefitsExpense	210000000	USD
CY2011	cma	Employee Benefits Expense EmployeeBenefitsExpense	205000000	USD
CY2010	cma	Employee Benefits Expense EmployeeBenefitsExpense	179000000	USD
CY2011Q4	cma	Equity Method Investment Minimum Ownership Percentage To Qualify EquityMethodInvestmentMinimumOwnershipPercentageToQualify	0.20
CY2011	cma	Estimated Average Life Of Fund EstimatedAverageLifeOfFund	15
CY2010Q4	cma	Fair Value Assets Measured On Nonrecurring Basis Impaired Loans FairValueAssetsMeasuredOnNonrecurringBasisImpairedLoans	854000000	USD
CY2011Q4	cma	Fair Value Assets Measured On Nonrecurring Basis Impaired Loans FairValueAssetsMeasuredOnNonrecurringBasisImpairedLoans	607000000	USD
CY2011Q4	cma	Fair Value Assets Measured On Nonrecurring Basis Nonmarketable Equity Securities FairValueAssetsMeasuredOnNonrecurringBasisNonmarketableEquitySecurities	1000000	USD
CY2010Q4	cma	Fair Value Assets Measured On Nonrecurring Basis Nonmarketable Equity Securities FairValueAssetsMeasuredOnNonrecurringBasisNonmarketableEquitySecurities	9000000	USD
CY2010	cma	Financing Receivable Allowance For Credit Losses Write Offs Recoveries Net FinancingReceivableAllowanceForCreditLossesWriteOffsRecoveriesNet	-564000000	USD
CY2011	cma	Financing Receivable Allowance For Credit Losses Write Offs Recoveries Net FinancingReceivableAllowanceForCreditLossesWriteOffsRecoveriesNet	-328000000	USD
CY2009	cma	Financing Receivable Allowance For Credit Losses Write Offs Recoveries Net FinancingReceivableAllowanceForCreditLossesWriteOffsRecoveriesNet	-868000000	USD
CY2009	cma	Foreign Exchange Income ForeignExchangeIncome	41000000	USD
CY2010	cma	Foreign Exchange Income ForeignExchangeIncome	39000000	USD
CY2011	cma	Foreign Exchange Income ForeignExchangeIncome	40000000	USD
CY2011Q4	cma	Foreign Office Time Deposits ForeignOfficeTimeDeposits	348000000	USD
CY2010Q4	cma	Foreign Office Time Deposits ForeignOfficeTimeDeposits	432000000	USD
CY2009	cma	Gain Loss On Repurchase Of Long Term Debt GainLossOnRepurchaseOfLongTermDebt	15000000	USD
CY2010	cma	Gain Loss On Repurchase Of Long Term Debt GainLossOnRepurchaseOfLongTermDebt	0	USD
CY2011	cma	Gain Loss On Repurchase Of Long Term Debt GainLossOnRepurchaseOfLongTermDebt	0	USD
CY2010	cma	Impact Of Preferred Stock Including Redemption Charge Cash Dividends Non Cash Discount Accretion On Diluted Earnings Per Share ImpactOfPreferredStockIncludingRedemptionChargeCashDividendsNonCashDiscountAccretionOnDilutedEarningsPerShare	0.71
CY2010Q1	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	0	USD
CY2010Q2	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	1000000	USD
CY2010Q3	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	0	USD
CY2010Q4	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	1000000	USD
CY2011Q3	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	1000000	USD
CY2011Q2	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	1000000	USD
CY2011Q1	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	1000000	USD
CY2011Q4	cma	Income Allocable To Participating Securities IncomeAllocableToParticipatingSecurities	1000000	USD
CY2009	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	-115000000	USD
CY2010	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	315000000	USD
CY2011	cma	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	530000000	USD
CY2011	cma	Income Tax Expense Benefit Recognized Due To Interest And Penalties IncomeTaxExpenseBenefitRecognizedDueToInterestAndPenalties	7000000	USD
CY2010	cma	Income Tax Expense Benefit Recognized Due To Interest And Penalties IncomeTaxExpenseBenefitRecognizedDueToInterestAndPenalties	5000000	USD
CY2009	cma	Income Tax Expense Benefit Recognized Due To Interest And Penalties IncomeTaxExpenseBenefitRecognizedDueToInterestAndPenalties	19000000	USD
CY2009	cma	Income Tax Provision On Securities Transactions IncomeTaxProvisionOnSecuritiesTransactions	85000000	USD
CY2010	cma	Income Tax Provision On Securities Transactions IncomeTaxProvisionOnSecuritiesTransactions	1000000	USD
CY2011	cma	Income Tax Provision On Securities Transactions IncomeTaxProvisionOnSecuritiesTransactions	5000000	USD
CY2009	cma	Income Tax Reconciliation Housing And Historic Credits IncomeTaxReconciliationHousingAndHistoricCredits	-46000000	USD
CY2011	cma	Income Tax Reconciliation Housing And Historic Credits IncomeTaxReconciliationHousingAndHistoricCredits	-51000000	USD
CY2010	cma	Income Tax Reconciliation Housing And Historic Credits IncomeTaxReconciliationHousingAndHistoricCredits	-49000000	USD
CY2011	cma	Income Tax Reconciliation Interest On Income Tax Liabilities IncomeTaxReconciliationInterestOnIncomeTaxLiabilities	-7000000	USD
CY2010	cma	Income Tax Reconciliation Interest On Income Tax Liabilities IncomeTaxReconciliationInterestOnIncomeTaxLiabilities	3000000	USD
CY2009	cma	Income Tax Reconciliation Interest On Income Tax Liabilities IncomeTaxReconciliationInterestOnIncomeTaxLiabilities	-13000000	USD
CY2011	cma	Income Tax Reconciliation Other Changes In Unrecognized Tax Benefits IncomeTaxReconciliationOtherChangesInUnrecognizedTaxBenefits	17000000	USD
CY2009	cma	Income Tax Reconciliation Other Changes In Unrecognized Tax Benefits IncomeTaxReconciliationOtherChangesInUnrecognizedTaxBenefits	1000000	USD
CY2010	cma	Income Tax Reconciliation Other Changes In Unrecognized Tax Benefits IncomeTaxReconciliationOtherChangesInUnrecognizedTaxBenefits	2000000	USD
CY2010	cma	Income Tax Reconciliation Termination Of Structured Leasing Transaction IncomeTaxReconciliationTerminationOfStructuredLeasingTransaction	0	USD
CY2011	cma	Income Tax Reconciliation Termination Of Structured Leasing Transaction IncomeTaxReconciliationTerminationOfStructuredLeasingTransaction	0	USD
CY2009	cma	Income Tax Reconciliation Termination Of Structured Leasing Transaction IncomeTaxReconciliationTerminationOfStructuredLeasingTransaction	-11000000	USD
CY2011Q4	cma	Leases Receivable Commercial Lease Financing Net Of Deferred Income LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome	905000000	USD
CY2010Q4	cma	Leases Receivable Commercial Lease Financing Net Of Deferred Income LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome	1009000000	USD
CY2009	cma	Letter Of Credit Fees LetterOfCreditFees	69000000	USD
CY2010	cma	Letter Of Credit Fees LetterOfCreditFees	76000000	USD
CY2011	cma	Letter Of Credit Fees LetterOfCreditFees	73000000	USD
CY2010	cma	Litigation And Operational Losses LitigationAndOperationalLosses	11000000	USD
CY2009	cma	Litigation And Operational Losses LitigationAndOperationalLosses	10000000	USD
CY2011	cma	Litigation And Operational Losses LitigationAndOperationalLosses	17000000	USD
CY2010Q4	cma	Loans And Leases Receivable Consumer Loans Net Of Deferred Income LoansAndLeasesReceivableConsumerLoansNetOfDeferredIncome	2311000000	USD
CY2011Q4	cma	Loans And Leases Receivable Consumer Loans Net Of Deferred Income LoansAndLeasesReceivableConsumerLoansNetOfDeferredIncome	2285000000	USD
CY2011Q4	cma	Loans And Leases Receivable Consumer Mortgage Net Of Deferred Income LoansAndLeasesReceivableConsumerMortgageNetOfDeferredIncome	1526000000	USD
CY2010Q4	cma	Loans And Leases Receivable Consumer Mortgage Net Of Deferred Income LoansAndLeasesReceivableConsumerMortgageNetOfDeferredIncome	1619000000	USD
CY2010Q4	cma	Loans And Leases Receivable Foreign Net Of Deferred Income Other LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther	1132000000	USD
CY2011Q4	cma	Loans And Leases Receivable Foreign Net Of Deferred Income Other LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther	1170000000	USD
CY2011	cma	Loans Modified By Principal Deferral LoansModifiedByPrincipalDeferral	185000000	USD
CY2011	cma	Loans Modified By Reducing Rate On Loan LoansModifiedByReducingRateOnLoan	40000000	USD
CY2011Q4	cma	Loans Receivable Commercial Financial And Agricultural Net Of Deferred Income LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome	24996000000	USD
CY2010Q4	cma	Loans Receivable Commercial Financial And Agricultural Net Of Deferred Income LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome	22145000000	USD
CY2011Q4	cma	Loans Receivable Commercial Mortgage Net Of Deferred Income LoansReceivableCommercialMortgageNetOfDeferredIncome	10264000000	USD
CY2010Q4	cma	Loans Receivable Commercial Mortgage Net Of Deferred Income LoansReceivableCommercialMortgageNetOfDeferredIncome	9767000000	USD
CY2009Q4	cma	Loans Receivable Ratio Of Allowance For Loan Losses To All Loans LoansReceivableRatioOfAllowanceForLoanLossesToAllLoans	0.0234
CY2010Q4	cma	Loans Receivable Ratio Of Allowance For Loan Losses To All Loans LoansReceivableRatioOfAllowanceForLoanLossesToAllLoans	0.0224
CY2011Q4	cma	Loans Receivable Ratio Of Allowance For Loan Losses To All Loans LoansReceivableRatioOfAllowanceForLoanLossesToAllLoans	0.0170
CY2011Q4	cma	Long Term Debt Face Amount LongTermDebtFaceAmount	4602000000	USD
CY2011Q4	cma	Longest Expiration Year Letters Of Credit LongestExpirationYearLettersOfCredit	2021
CY2011	cma	Market Value Of Plan Assets Period Of Consideration MarketValueOfPlanAssetsPeriodOfConsideration	P5Y
CY2011Q4	cma	Medium Term Senior Note Program MediumTermSeniorNoteProgram	15000000000	USD
CY2011	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	328000000	USD
CY2010	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	564000000	USD
CY2009	cma	Net Credit Related Charge Offs NetCreditRelatedChargeOffs	869000000	USD
CY2009	cma	Net Increase In Fixed Assets NetIncreaseInFixedAssets	74000000	USD
CY2011	cma	Net Increase In Fixed Assets NetIncreaseInFixedAssets	121000000	USD
CY2010	cma	Net Increase In Fixed Assets NetIncreaseInFixedAssets	92000000	USD
CY2010Q2	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	193000000	USD
CY2010Q4	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	215000000	USD
CY2010Q3	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	186000000	USD
CY2010Q1	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	192000000	USD
CY2011Q2	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	198000000	USD
CY2011Q3	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	189000000	USD
CY2011Q4	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	186000000	USD
CY2011Q1	cma	Non Interest Income Excluding Net Securities Gains NonInterestIncomeExcludingNetSecuritiesGains	205000000	USD
CY2011	cma	Non Performing Loans On Loans Modified By Principal Deferral NonPerformingLoansOnLoansModifiedByPrincipalDeferral	100000000	USD
CY2011	cma	Noncash Acquisition Net Assets Acquired Liabilities Assumed NoncashAcquisitionNetAssetsAcquiredLiabilitiesAssumed	82000000	USD
CY2009	cma	Noncash Acquisition Net Assets Acquired Liabilities Assumed NoncashAcquisitionNetAssetsAcquiredLiabilitiesAssumed	0	USD
CY2010	cma	Noncash Acquisition Net Assets Acquired Liabilities Assumed NoncashAcquisitionNetAssetsAcquiredLiabilitiesAssumed	0	USD
CY2011Q4	cma	Notional Amount Derivative In Shares NotionalAmountDerivativeInShares	780000	shares
CY2011Q1	cma	Notional Amount Of Cash Flow Derivatives Matured NotionalAmountOfCashFlowDerivativesMatured	800000000	USD
CY2011	cma	Number Of Geographic Markets NumberOfGeographicMarkets	4
CY2011	cma	Number Of Major Business Segments NumberOfMajorBusinessSegments	3	segments
CY2011	cma	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxIncreaseDecrease	112000000	USD
CY2010	cma	Other Real Estate Expense OtherRealEstateExpense	29000000	USD
CY2011	cma	Other Real Estate Expense OtherRealEstateExpense	22000000	USD
CY2009	cma	Other Real Estate Expense OtherRealEstateExpense	48000000	USD
CY2011	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	101000000	USD
CY2010	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	96000000	USD
CY2009	cma	Outside Processing Fee Expense OutsideProcessingFeeExpense	97000000	USD
CY2011Q4	cma	Partnership Interest In Low Income Housing Partnerships PartnershipInterestInLowIncomeHousingPartnerships	155
CY2011Q4	cma	Percent Of Fair Value Derivative Contracts With Bilateral Agreements With Unrealized Gain Secured PercentOfFairValueDerivativeContractsWithBilateralAgreementsWithUnrealizedGainSecured	0.90
CY2011	cma	Percentage Of Overhead Assigned Based On Proportion Of Equity PercentageOfOverheadAssignedBasedOnProportionOfEquity	0.50
CY2011	cma	Percentage Of Overhead Assigned Based On Proportion Of Noninterest Expense PercentageOfOverheadAssignedBasedOnProportionOfNoninterestExpense	0.50
CY2010	cma	Preferred Stock Redemption Effect On Diluted Earnings Per Share PreferredStockRedemptionEffectOnDilutedEarningsPerShare	0.54
CY2009	cma	Proceeds Of Structured Leases ProceedsOfStructuredLeases	107000000	USD
CY2010	cma	Proceeds Of Structured Leases ProceedsOfStructuredLeases	0	USD
CY2011	cma	Proceeds Of Structured Leases ProceedsOfStructuredLeases	0	USD
CY2010	cma	Provision On Credit Losses On Lending Related Commitments ProvisionOnCreditLossesOnLendingRelatedCommitments	-2000000	USD
CY2011	cma	Provision On Credit Losses On Lending Related Commitments ProvisionOnCreditLossesOnLendingRelatedCommitments	-9000000	USD
CY2009	cma	Provision On Credit Losses On Lending Related Commitments ProvisionOnCreditLossesOnLendingRelatedCommitments	0	USD
CY2010Q4	cma	Real Estate Construction Loans Net Of Deferred Income RealEstateConstructionLoansNetOfDeferredIncome	2253000000	USD
CY2011Q4	cma	Real Estate Construction Loans Net Of Deferred Income RealEstateConstructionLoansNetOfDeferredIncome	1533000000	USD
CY2011Q4	cma	Receivables Change In Method Of Calculating Impairment Recorded Investment ReceivablesChangeInMethodOfCalculatingImpairmentRecordedInvestment	9000000	USD
CY2011Q4	cma	Reduced Rate Loans ReducedRateLoans	27000000	USD
CY2010Q4	cma	Reduced Rate Loans ReducedRateLoans	43000000	USD
CY2011Q3	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	21532000	shares
CY2011Q4	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	19947000	shares
CY2011Q4	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	20027000	shares
CY2011Q1	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	23656000	shares
CY2011	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	19947000	shares
CY2011Q4	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	21092000	shares
CY2011Q4	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	19947000	shares
CY2011Q2	cma	Remaining Shares Repurchase Authorization RemainingSharesRepurchaseAuthorization	23656000	shares
CY2011	cma	Restructuring And Related Cost Expected Cost Net Of Tax RestructuringAndRelatedCostExpectedCostNetOfTax	73000000	USD
CY2011	cma	Restructuring And Related Cost Incurred Costs Net Of Tax Effect RestructuringAndRelatedCostIncurredCostsNetOfTaxEffect	47000000	USD
CY2011	cma	Return On Average Assets ReturnOnAverageAssets	0.0069
CY2010	cma	Return On Average Assets ReturnOnAverageAssets	0.0050
CY2009	cma	Return On Average Assets ReturnOnAverageAssets	0.0003
CY2011Q4	cma	Risk Participations Covering Standby Commercial Letters Of Credit RiskParticipationsCoveringStandbyCommercialLettersOfCredit	271000000	USD
CY2010Q4	cma	Risk Participations Covering Standby Commercial Letters Of Credit RiskParticipationsCoveringStandbyCommercialLettersOfCredit	298000000	USD
CY2010	cma	Salaries Expense SalariesExpense	740000000	USD
CY2011	cma	Salaries Expense SalariesExpense	770000000	USD
CY2009	cma	Salaries Expense SalariesExpense	687000000	USD
CY2011	cma	Schedule Of Maturities Of Time Deposits Textblock ScheduleOfMaturitiesOfTimeDepositsTextblock	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:49px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">At </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2011</font><font style="font-family:inherit;font-size:10pt;">, the scheduled maturities of certificates of deposit and other deposits with a stated maturity were as follows:</font></div><div style="line-height:120%;padding-top:4px;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:99.80506822612085%;border-collapse:collapse;text-align:left;"><tr><td colspan="4" rowspan="1"></td></tr><tr><td width="87%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="11%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">(in millions)</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Years Ending December 31</font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font><font style="font-family:inherit;font-size:8pt;"> </font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2012</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">5,152</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2013</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">645</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2014</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">163</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2015</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">60</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">2016</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">46</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Thereafter</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">90</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:2.5px solid #000000;background-color:#cceeff;padding-left:12px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Total</font></div></td><td style="vertical-align:bottom;border-bottom:2.5px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">$</font></div></td><td style="vertical-align:bottom;border-bottom:2.5px solid #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">6,156</font></div></td><td style="vertical-align:bottom;border-bottom:2.5px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div></div></div>
CY2011	cma	Segment Reporting Information Interest Income Expense Net Fte SegmentReportingInformationInterestIncomeExpenseNetFte	1657000000	USD
CY2010	cma	Segment Reporting Information Interest Income Expense Net Fte SegmentReportingInformationInterestIncomeExpenseNetFte	1651000000	USD
CY2009	cma	Segment Reporting Information Interest Income Expense Net Fte SegmentReportingInformationInterestIncomeExpenseNetFte	1575000000	USD
CY2011	cma	Segment Reporting Information Tax Expense Fte SegmentReportingInformationTaxExpenseFte	141000000	USD
CY2010	cma	Segment Reporting Information Tax Expense Fte SegmentReportingInformationTaxExpenseFte	60000000	USD
CY2009	cma	Segment Reporting Information Tax Expense Fte SegmentReportingInformationTaxExpenseFte	-123000000	USD
CY2010	cma	Share Based Compensation Phantom Stock Units ShareBasedCompensationPhantomStockUnits	7000000	USD
CY2011	cma	Software Expenses SoftwareExpenses	88000000	USD
CY2010	cma	Software Expenses SoftwareExpenses	89000000	USD
CY2009	cma	Software Expenses SoftwareExpenses	84000000	USD
CY2011Q4	cma	Total Automotive Exposure TotalAutomotiveExposure	7529000000	USD
CY2010Q4	cma	Total Automotive Exposure TotalAutomotiveExposure	7536000000	USD
CY2011	cma	Total Comprehensive Income Loss Increase Decrease TotalComprehensiveIncomeLossIncreaseDecrease	202000000	USD
CY2010Q4	cma	Total Internally Classified Watch List Letters Of Credit TotalInternallyClassifiedWatchListLettersOfCredit	243000000	USD
CY2011Q4	cma	Total Internally Classified Watch List Letters Of Credit TotalInternallyClassifiedWatchListLettersOfCredit	195000000	USD
CY2010Q4	cma	Total Nonperforming Assets TotalNonperformingAssets	1235000000	USD
CY2011Q4	cma	Total Nonperforming Assets TotalNonperformingAssets	981000000	USD
CY2010Q4	cma	Total Nonperforming Loans TotalNonperformingLoans	1123000000	USD
CY2011Q4	cma	Total Nonperforming Loans TotalNonperformingLoans	887000000	USD
CY2011Q1	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	400000	shares
CY2011Q4	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	1065000	shares
CY2011Q4	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	440000	shares
CY2011Q2	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	0	shares
CY2011Q4	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	80000	shares
CY2011	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	4109000	shares
CY2011Q3	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	2124000	shares
CY2011Q4	cma	Total Number Of Shares Or Warrants Repurchased Per Repurchase Plans TotalNumberOfSharesOrWarrantsRepurchasedPerRepurchasePlans	1585000	shares
CY2011	cma	Transfers Into Or Out Of Level One Or Level Two Or Level Three TransfersIntoOrOutOfLevelOneOrLevelTwoOrLevelThree	0	USD
CY2010	cma	Transfers Into Or Out Of Level One Or Level Two Or Level Three TransfersIntoOrOutOfLevelOneOrLevelTwoOrLevelThree	0	USD
CY2011	cma	Troubled Debt Restructuring Modifications Recorded Investment TroubledDebtRestructuringModificationsRecordedInvestment	256000000	USD
CY2011Q4	cma	Trust Preferred Securities Outstanding TrustPreferredSecuritiesOutstanding	29000000	USD
CY2011	cma	Underlying Assets Of Funds Estimated Liquidation Period UnderlyingAssetsOfFundsEstimatedLiquidationPeriod	15
CY2011	cma	Unrecognized Tax Benefits Decreases Resulting From Filing Amended Tax Returns UnrecognizedTaxBenefitsDecreasesResultingFromFilingAmendedTaxReturns	0	USD
CY2009	cma	Unrecognized Tax Benefits Decreases Resulting From Filing Amended Tax Returns UnrecognizedTaxBenefitsDecreasesResultingFromFilingAmendedTaxReturns	-34000000	USD
CY2010	cma	Unrecognized Tax Benefits Decreases Resulting From Filing Amended Tax Returns UnrecognizedTaxBenefitsDecreasesResultingFromFilingAmendedTaxReturns	0	USD
CY2011Q4	cma	Watch List Letters Of Credit As Percentage Of Total Letters Of Credit WatchListLettersOfCreditAsPercentageOfTotalLettersOfCredit	0.036
CY2010Q4	cma	Watch List Letters Of Credit As Percentage Of Total Letters Of Credit WatchListLettersOfCreditAsPercentageOfTotalLettersOfCredit	0.044
CY2011	dei	Amendment Flag AmendmentFlag	false
CY2011	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2011	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011	dei	Document Period End Date DocumentPeriodEndDate	2011-12-31
CY2011	dei	Document Type DocumentType	10-K
CY2011	dei	Entity Central Index Key EntityCentralIndexKey	0000028412
CY2012Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	197627048	shares
CY2011	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2011	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2011Q2	dei	Entity Public Float EntityPublicFloat	5900000000	USD
CY2011	dei	Entity Registrant Name EntityRegistrantName	Comerica INC /NEW/
CY2011	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2011	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

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

2010 Q4 Form 10-K Financial Statement

#000002841212000031 Filed on February 21, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMA COMERICA INC /NEW/ Stock $cma

2010 Q4 Form 10-K Financial Statement

#000002841212000031 Filed on February 21, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMA
COMERICA INC /NEW/ Stock $cma