$ASB
ASSOCIATED BANC-CORP Stock $asb

$asb Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000119312512082677 Filed on February 28, 2012

Income Statement

Concept	2011 Q4	2010 Q4	2010 Q1
Revenue
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	$19.00M	$15.00M	$14.30M
YoY Change	26.67%	3.45%	9.16%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$50.00M	$5.700M	-$49.90M
YoY Change	777.19%	-101.96%	-257.91%
Income Tax	$8.900M	-$8.300M	-$23.60M
% Of Pretax Income	17.8%	-145.61%
Net Earnings	$41.10M	$14.00M	-$26.40M
YoY Change	193.57%	-108.08%	-161.83%
Net Earnings / Revenue
Basic Earnings Per Share
Diluted Earnings Per Share	$236.9K	$80.83K	-$159.2K
COMMON SHARES
Basic Shares Outstanding	174.0M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2011 Q4	2010 Q4	2010 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$616.6M	$868.2M
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	$223.7M	$190.5M	$183.0M
YoY Change	17.43%	1.89%	-2.66%
Goodwill	$929.2M	$929.2M
YoY Change	0.0%
Intangibles	$67.57M	$88.04M
YoY Change	-23.25%
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	$21.92B	$21.79B	$23.11B
YoY Change	0.64%	-4.76%	-5.1%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$196.0M	$240.0M	$211.0M
YoY Change	-18.33%	6.19%	-16.6%
Deferred Revenue
YoY Change
Short-Term Debt	$2.514B	$1.747B	$576.0M
YoY Change	43.9%	42.41%	-84.7%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$196.0M	$240.0M	$211.0M
YoY Change	-18.33%	6.19%	-16.6%
LONG-TERM LIABILITIES
Long-Term Debt	$677.0M	$413.0M	$1.644B
YoY Change	63.92%	-78.86%	271.11%
Other Long-Term Liabilities	$80.00M
YoY Change
Total Long-Term Liabilities	$757.0M	$413.0M	$1.644B
YoY Change	83.29%	-78.86%	271.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$196.0M	$240.0M	$211.0M
Total Long-Term Liabilities	$757.0M	$413.0M	$1.644B
Total Liabilities	$19.06B	$18.63B	$19.93B
YoY Change	2.32%	-7.5%	-7.11%
SHAREHOLDERS EQUITY
Retained Earnings	$1.149B	$1.042B
YoY Change	10.28%
Common Stock	$1.588B	$1.575B
YoY Change	0.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$0.00	$0.00
YoY Change
Treasury Stock Shares	0.000 shares	0.000 shares
Shareholders Equity	$2.866B	$3.159B	$3.181B
YoY Change
Total Liabilities & Shareholders Equity	$21.92B	$21.79B	$23.11B
YoY Change	0.64%	-4.76%	-5.1%

Cashflow Statement

Concept	2011 Q4	2010 Q4	2010 Q1
OPERATING ACTIVITIES
Net Income	$41.10M	$14.00M	-$26.40M
YoY Change	193.57%	-108.08%	-161.83%
Depreciation, Depletion And Amortization	$19.00M	$15.00M	$14.30M
YoY Change	26.67%	3.45%	9.16%
Cash From Operating Activities	$67.10M	$156.2M	$120.2M
YoY Change	-57.04%	977.24%	-29.95%
INVESTING ACTIVITIES
Capital Expenditures	-$27.30M	-$18.90M	-$3.100M
YoY Change	44.44%	110.0%	-8.82%
Acquisitions
YoY Change
Other Investing Activities	-$76.60M	-$1.128B	$1.088B
YoY Change	-93.21%	-715.1%	-248.97%
Cash From Investing Activities	-$103.8M	-$1.147B	$1.085B
YoY Change	-90.95%	-757.68%	-247.87%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$478.0M
YoY Change			-79766.67%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-12.10M	-679.7M	276.6M
YoY Change	-98.22%	-497.02%	-35.87%
NET CHANGE
Cash From Operating Activities	67.10M	156.2M	120.2M
Cash From Investing Activities	-103.8M	-1.147B	1.085B
Cash From Financing Activities	-12.10M	-679.7M	276.6M
Net Change In Cash	-48.80M	-1.671B	1.482B
YoY Change	-97.08%	-563.9%	-1231.3%
FREE CASH FLOW
Cash From Operating Activities	$67.10M	$156.2M	$120.2M
Capital Expenditures	-$27.30M	-$18.90M	-$3.100M
Free Cash Flow	$94.40M	$175.1M	$123.3M
YoY Change	-46.09%	645.11%	-29.54%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	13652920000	USD
CY2011	dei	Entity Registrant Name EntityRegistrantName	ASSOCIATED BANC-CORP
CY2011	dei	Entity Central Index Key EntityCentralIndexKey	0000007789
CY2011	dei	Document Type DocumentType	10-K
CY2011	dei	Document Period End Date DocumentPeriodEndDate	2011-12-31
CY2011	dei	Amendment Flag AmendmentFlag	false
CY2011	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
CY2011	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2011	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2011	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2011	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2011	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2011	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2011Q2	dei	Entity Public Float EntityPublicFloat	2380375000	USD
CY2011Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	173984443	shares
CY2011Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	454958000	USD
CY2010Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	319487000	USD
CY2011Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	154562000	USD
CY2010Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	546125000	USD
CY2011Q4	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	7075000	USD
CY2010Q4	us-gaap	Federal Funds Sold And Securities Purchased Under Agreements To Resell FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	2550000	USD
CY2011Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	4937483000	USD
CY2010Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	6101341000	USD
CY2011Q4	asbc	Federal Home Loan Bank And Federal Reserve Bank Stocks At Cost FederalHomeLoanBankAndFederalReserveBankStocksAtCost	191188000	USD
CY2010Q4	asbc	Federal Home Loan Bank And Federal Reserve Bank Stocks At Cost FederalHomeLoanBankAndFederalReserveBankStocksAtCost	190968000	USD
CY2011Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	249195000	USD
CY2010Q4	us-gaap	Loans Receivable Held For Sale Net LoansReceivableHeldForSaleNet	144808000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	14031071000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	12616735000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	378151000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	476813000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	12139922000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	223736000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	190533000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	929168000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	929168000	USD
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	67574000	USD
CY2010Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	88044000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	1056358000	USD
CY2010Q4	us-gaap	Other Assets OtherAssets	1132650000	USD
CY2011Q4	us-gaap	Assets Assets	21924217000	USD
CY2010Q4	us-gaap	Assets Assets	21785596000	USD
CY2011Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	3928792000	USD
CY2010Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	3684965000	USD
CY2011Q4	asbc	Interest Bearing Deposits Excluding Brokered Certificates Of Deposit InterestBearingDepositsExcludingBrokeredCertificatesOfDeposit	10958915000	USD
CY2010Q4	asbc	Interest Bearing Deposits Excluding Brokered Certificates Of Deposit InterestBearingDepositsExcludingBrokeredCertificatesOfDeposit	11097788000	USD
CY2011Q4	asbc	Brokered Certificates Of Deposit BrokeredCertificatesOfDeposit	202948000	USD
CY2010Q4	asbc	Brokered Certificates Of Deposit BrokeredCertificatesOfDeposit	442640000	USD
CY2011Q4	us-gaap	Deposits Deposits	15090655000	USD
CY2010Q4	us-gaap	Deposits Deposits	15225393000	USD
CY2011Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2514485000	USD
CY2010Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	1747382000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	1177071000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	1413605000	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	276212000	USD
CY2010Q4	us-gaap	Other Liabilities OtherLiabilities	240425000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	19058423000	USD
CY2010Q4	us-gaap	Liabilities Liabilities	18626805000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	21785596000	USD
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	65000	shares
CY2010Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	525000	shares
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	750000	shares
CY2010Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	750000	shares
CY2011Q4	us-gaap	Preferred Stock Including Additional Paid In Capital PreferredStockIncludingAdditionalPaidInCapital	63272000	USD
CY2010Q4	us-gaap	Preferred Stock Including Additional Paid In Capital PreferredStockIncludingAdditionalPaidInCapital	514388000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	1746000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	1739000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1586401000	USD
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1573372000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1148773000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1041666000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	65602000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	27626000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2010Q4	us-gaap	Treasury Stock Value TreasuryStockValue	0	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	2865794000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	3158791000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	21924217000	USD
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	174591841	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	173887504	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	0	shares
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	0	shares
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2010Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	582739000	USD
CY2011	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	123371000	USD
CY2011	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	29937000	USD
CY2011	us-gaap	Interest Expense Deposits InterestExpenseDeposits	65748000	USD
CY2011	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	12411000	USD
CY2011	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	50632000	USD
CY2011	us-gaap	Interest Expense InterestExpense	128791000	USD
CY2011	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	612831000	USD
CY2011	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	52000000	USD
CY2011	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	560831000	USD
CY2011	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	39145000	USD
CY2011	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	75908000	USD
CY2011	asbc	Card Based And Other Nondeposit Fees CardBasedAndOtherNondepositFees	57905000	USD
CY2011	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	62784000	USD
CY2011	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	12723000	USD
CY2011	asbc	Capital Market Fees Net CapitalMarketFeesNet	8711000	USD
CY2011	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	14896000	USD
CY2011	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-2849000	USD
CY2011	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	-228000	USD
CY2011	us-gaap	Impairment Of Investments ImpairmentOfInvestments	2417000	USD
CY2011	asbc	Other Comprehensive Income Noncredit Portion Recognized During Period Before Tax OtherComprehensiveIncomeNoncreditPortionRecognizedDuringPeriodBeforeTax	1533000	USD
CY2011	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1112000	USD
CY2011	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	14358000	USD
CY2011	us-gaap	Noninterest Income NoninterestIncome	282469000	USD
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	358295000	USD
CY2011	us-gaap	Occupancy Net OccupancyNet	55939000	USD
CY2011	us-gaap	Equipment Expense EquipmentExpense	19873000	USD
CY2011	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	32475000	USD
CY2011	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	23038000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4714000	USD
CY2011	asbc	Legal And Professional Fees LegalAndProfessionalFees	18205000	USD
CY2011	asbc	Losses Other Than Loans LossesOtherThanLoans	17921000	USD
CY2011	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	30743000	USD
CY2011	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	28484000	USD
CY2011	us-gaap	Other Noninterest Expense OtherNoninterestExpense	58178000	USD
CY2011	us-gaap	Noninterest Expense NoninterestExpense	659873000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	183427000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43728000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	139699000	USD
CY2011	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	24830000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	114869000	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.66
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.66
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	173370000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	173372000	shares
CY2010	asbc	Losses Other Than Loans LossesOtherThanLoans	14793000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-40172000	USD
CY2010	us-gaap	Labor And Related Expense LaborAndRelatedExpense	323249000	USD
CY2010	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	33915000	USD
CY2010	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	33136000	USD
CY2010	us-gaap	Interest Expense Deposits InterestExpenseDeposits	106023000	USD
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	171230000	shares
CY2010	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	33844000	USD
CY2010	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	608487000	USD
CY2010	asbc	Capital Market Fees Net CapitalMarketFeesNet	6072000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	-856000	USD
CY2010	asbc	Other Comprehensive Income Noncredit Portion Recognized During Period Before Tax OtherComprehensiveIncomeNoncreditPortionRecognizedDuringPeriodBeforeTax	2121000	USD
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.18
CY2010	asbc	Card Based And Other Nondeposit Fees CardBasedAndOtherNondepositFees	59299000	USD
CY2010	us-gaap	Noninterest Expense NoninterestExpense	630320000	USD
CY2010	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	243769000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-30387000	USD
CY2010	us-gaap	Occupancy Net OccupancyNet	49937000	USD
CY2010	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	61256000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4919000	USD
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.18
CY2010	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	633779000	USD
CY2010	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	29714000	USD
CY2010	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	46377000	USD
CY2010	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	37853000	USD
CY2010	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	12493000	USD
CY2010	us-gaap	Equipment Expense EquipmentExpense	18371000	USD
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	171230000	shares
CY2010	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	28854000	USD
CY2010	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	390010000	USD
CY2010	us-gaap	Impairment Of Investments ImpairmentOfInvestments	6058000	USD
CY2010	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	24917000	USD
CY2010	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	58341000	USD
CY2010	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	18385000	USD
CY2010	us-gaap	Interest Expense InterestExpense	172347000	USD
CY2010	us-gaap	Other Noninterest Expense OtherNoninterestExpense	60327000	USD
CY2010	asbc	Legal And Professional Fees LegalAndProfessionalFees	20439000	USD
CY2010	us-gaap	Noninterest Income NoninterestIncome	345523000	USD
CY2010	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	29531000	USD
CY2010	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	155031000	USD
CY2010	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	15761000	USD
CY2010	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	7983000	USD
CY2010	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-2004000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-41028000	USD
CY2010	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	96740000	USD
CY2009	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.26
CY2009	us-gaap	Interest Expense Deposits InterestExpenseDeposits	160874000	USD
CY2009	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	750645000	USD
CY2009	asbc	Card Based And Other Nondeposit Fees CardBasedAndOtherNondepositFees	55077000	USD
CY2009	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	16199000	USD
CY2009	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-161207000	USD
CY2009	asbc	Losses Other Than Loans LossesOtherThanLoans	16954000	USD
CY2009	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	35799000	USD
CY2009	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5543000	USD
CY2009	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	29348000	USD
CY2009	us-gaap	Labor And Related Expense LaborAndRelatedExpense	304390000	USD
CY2009	us-gaap	Occupancy Net OccupancyNet	49341000	USD
CY2009	us-gaap	Noninterest Expense NoninterestExpense	611420000	USD
CY2009	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	752265000	USD
CY2009	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	60678000	USD
CY2009	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-285099000	USD
CY2009	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.26
CY2009	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	30893000	USD
CY2009	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-153240000	USD
CY2009	us-gaap	Fees And Commissions Fiduciary And Trust Activities FeesAndCommissionsFiduciaryAndTrustActivities	36009000	USD
CY2009	us-gaap	Foreclosed Real Estate Expense ForeclosedRealEstateExpense	38129000	USD
CY2009	asbc	Legal And Professional Fees LegalAndProfessionalFees	19562000	USD
CY2009	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-4071000	USD
CY2009	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	41934000	USD
CY2009	us-gaap	Noninterest Income NoninterestIncome	350961000	USD
CY2009	asbc	Other Comprehensive Income Noncredit Portion Recognized During Period Before Tax OtherComprehensiveIncomeNoncreditPortionRecognizedDuringPeriodBeforeTax	1475000	USD
CY2009	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	78178000	USD
CY2009	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	11705000	USD
CY2009	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	40882000	USD
CY2009	us-gaap	Interest Expense InterestExpense	255251000	USD
CY2009	asbc	Capital Market Fees Net CapitalMarketFeesNet	5536000	USD
CY2009	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	726005000	USD
CY2009	us-gaap	Impairment Of Investments ImpairmentOfInvestments	4406000	USD
CY2009	us-gaap	Net Income Loss NetIncomeLoss	-131859000	USD
CY2009	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	127858000	shares
CY2009	us-gaap	Other Noninterest Expense OtherNoninterestExpense	58070000	USD
CY2009	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	127858000	shares
CY2009	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	189157000	USD
CY2009	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	-24640000	USD
CY2009	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	16032000	USD
CY2009	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	15126000	USD
CY2009	us-gaap	Equipment Expense EquipmentExpense	18385000	USD
CY2009	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	116918000	USD
CY2009	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	8774000	USD
CY2009	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	18033000	USD
CY2011	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	741622000	USD
CY2010	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	806126000	USD
CY2009	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	981256000	USD
CY2011	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	5575000	USD
CY2010	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	8693000	USD
CY2009	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	4035000	USD
CY2011	asbc	Loan Expense LoanExpense	12008000	USD
CY2010	asbc	Loan Expense LoanExpense	9965000	USD
CY2009	asbc	Loan Expense LoanExpense	10186000	USD
CY2008Q4	us-gaap	Stockholders Equity StockholdersEquity	2876503000	USD
CY2009	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	81000	USD
CY2009	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	599000	USD
CY2009	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	60350000	USD
CY2009	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	26250000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7959000	USD
CY2009	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	1000	USD
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	2738608000	USD
CY2009	asbc	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease Extended OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseExtended	73122000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-58737000	USD
CY2010	asbc	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease Extended OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseExtended	-35806000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-36662000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3468000	USD
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	830000	USD
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6948000	USD
CY2010	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	26250000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9036000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	11000	USD
CY2010	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	616000	shares
CY2011	asbc	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease Extended OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseExtended	37976000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	177675000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4231000	USD
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6977000	USD
CY2011	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	14218000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	63272000	USD
CY2011	us-gaap	Stock Redeemed Or Called During Period Value StockRedeemedOrCalledDuringPeriodValue	525000000	USD
CY2011	us-gaap	Other Preferred Stock Dividends And Adjustments OtherPreferredStockDividendsAndAdjustments	0	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11024000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	-2345000	USD
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	659000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	478358000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	33628000	USD
CY2011	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	7403000	USD
CY2011	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	25830000	USD
CY2011	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-65670000	USD
CY2011	us-gaap	Tax Benefit From Stock Options Exercised TaxBenefitFromStockOptionsExercised	-2345000	USD
CY2011	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	31628000	USD
CY2011	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	1855037000	USD
CY2011	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	1764801000	USD
CY2011	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-5062000	USD
CY2011	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-1232000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-62519000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	309787000	USD
CY2010	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	2259789000	USD
CY2010	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-4051000	USD
CY2010	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-13466000	USD
CY2010	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-62714000	USD
CY2010	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	34967000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	509422000	USD
CY2010	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	3067000	USD
CY2010	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	22942000	USD
CY2010	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	2314557000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-48932000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	30108000	USD
CY2010	us-gaap	Tax Benefit From Stock Options Exercised TaxBenefitFromStockOptionsExercised	11000	USD
CY2009	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	3731633000	USD
CY2009	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	3724441000	USD
CY2009	us-gaap	Depreciation And Amortization DepreciationAndAmortization	30623000	USD
CY2009	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	121843000	USD
CY2009	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-56734000	USD
CY2009	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-10734000	USD
CY2009	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-10887000	USD
CY2009	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	45926000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	438128000	USD
CY2009	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	6776000	USD
CY2009	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	19619000	USD
CY2009	us-gaap	Tax Benefit From Stock Options Exercised TaxBenefitFromStockOptionsExercised	1000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	34742000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	50808000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-134827000	USD
CY2011	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1754499000	USD
CY2011	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	777309000	USD
CY2011	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	76648000	USD
CY2011	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	3061000	USD
CY2011	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	176267000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1776245000	USD
CY2011	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	50417000	USD
CY2011	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	136051000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-472537000	USD
CY2010	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	3369225000	USD
CY2010	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	67400000	USD
CY2010	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	971662000	USD
CY2010	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	352589000	USD
CY2010	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-616608000	USD
CY2010	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	15516000	USD
CY2010	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2027847000	USD
CY2010	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	34595000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	616770000	USD
CY2009	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2380569000	USD
CY2009	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	22794000	USD
CY2009	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1026183000	USD
CY2009	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	USD
CY2009	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-1612146000	USD
CY2009	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	690762000	USD
CY2009	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	6273000	USD
CY2009	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	56314000	USD
CY2009	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	3684541000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	670104000	USD
CY2011	us-gaap	Origination Of Mortgage Servicing Rights Ms Rs OriginationOfMortgageServicingRightsMSRs	17476000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	659000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-251567000	USD
CY2011	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	63272000	USD
CY2011	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	767103000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6977000	USD
CY2011	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-134738000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-10839000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-88817000	USD
CY2011	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	525000000	USD
CY2011	asbc	Loans And Bank Premises Transferred To Other Real Estate Owned LoansAndBankPremisesTransferredToOtherRealEstateOwned	48752000	USD
CY2011	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	14218000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	432504000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	616595000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	129720000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-93723000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	47470000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	175776000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6948000	USD
CY2010	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	520529000	USD
CY2010	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	830000	USD
CY2010	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-1503220000	USD
CY2010	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	400000000	USD
CY2010	asbc	Loans And Bank Premises Transferred To Other Real Estate Owned LoansAndBankPremisesTransferredToOtherRealEstateOwned	49427000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	940361000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	820692000	USD
CY2010	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	26250000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	868162000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	478358000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1078722000	USD
CY2010	us-gaap	Origination Of Mortgage Servicing Rights Ms Rs OriginationOfMortgageServicingRightsMSRs	26165000	USD
CY2009	asbc	Loans And Bank Premises Transferred To Other Real Estate Owned LoansAndBankPremisesTransferredToOtherRealEstateOwned	73754000	USD
CY2009	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	800000000	USD
CY2009	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2009	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	26250000	USD
CY2009	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2009	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	249964000	USD
CY2009	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1573817000	USD
CY2009	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	599000	USD
CY2009	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-2477083000	USD
CY2008Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	570728000	USD
CY2009	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	707597000	USD
CY2009	us-gaap	Interest Paid Net InterestPaidNet	265501000	USD
CY2009	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	60350000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-898062000	USD
CY2009	us-gaap	Origination Of Mortgage Servicing Rights Ms Rs OriginationOfMortgageServicingRightsMSRs	44580000	USD
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	46213000	USD
CY2011	asbc	Description Of New Accounting Pronouncements Adopted DescriptionOfNewAccountingPronouncementsAdopted	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;margin-left:0px;">New Accounting Pronouncements Adopte</font><font style="font-family:Times New Roman;font-size:10pt;font-weight:bold;">d</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">In April 2011, the FASB issued clarifying guidance about which loan modifications constitute troubled debt restructurings. In evaluating whether a restructuring constitutes a troubled debt restructuring, the guidance maintains a creditor must separately conclude that the restructuring constitutes a concession and that the debtor is experiencing financial difficulties. The accounting standard provides further clarification whether a creditor has granted a concession and whether a debtor is experiencing financial difficulties. The measurement guidance is effective for interim and annual periods beginning on or after June 15, 2011, while the disclosure guidance is effective for interim and annual periods beginning on or after June 15, 2011 with retrospective application to restructurings occurring on or after the beginning of the fiscal year. The Corporation adopted the accounting standard as of the beginning of the third quarter of 2011, as required, with no material impact on its results of operations, financial position, and liquidity. See Note 3 for additional disclosures required under this accounting standard.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">In December 2010, the FASB issued guidance which modifies Step 1 of the goodwill impairment test for reporting units with zero or negative carrying amounts. In accordance with the guidance, for those reporting units, an entity is required to perform Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists. In determining whether it is more likely than not if goodwill impairment exists, the guidance states an entity should consider whether there are any adverse qualitative factors indicating that an impairment may exist. The guidance was effective for reporting periods beginning after December 15, 2010. The Corporation adopted the accounting standard as of January 1, 2011, as required, with no material impact on its results of operations, financial position, and liquidity. See Note 7 for disclosures concerning goodwill.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">In July 2010, the FASB issued guidance for improving disclosures about an entity's allowance for loan losses and the credit quality of its loans. The guidance requires additional disclosure to facilitate financial statement users' evaluation of the following: (1) the nature of credit risk inherent in the entity's loan portfolio, (2) how that risk is analyzed and assessed in arriving at the allowance for loan losses, and (3) the changes and reasons for those changes in the allowance for loan losses. The increased disclosures as of the end of a reporting period are effective for periods ending on or after December 15, 2010. Increased disclosures about activity that occurs during a reporting period are effective for interim and annual reporting periods beginning on or after December 31, 2010. The Corporation adopted the accounting standard as of December 31, 2010, with no material impact on the its results of operations, financial position, and liquidity. See Note 3 for additional disclosures required under this accounting standard.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Times New Roman;font-size:10pt;margin-left:0px;">In January 2010, the FASB issued an accounting standard providing additional guidance relating to fair value measurement disclosures. Specifically, companies will be required to separately disclose significant transfers into and out of Level 1 and Level 2 measurements in the fair value hierarchy and the reasons for those transfers. Significance should generally be based on earnings and total assets or liabilities, or when changes are recognized in other comprehensive income, based on total equity. Companies may take different approaches in determining when to recognize such transfers, including using the actual date of the event or change in circumstances causing the transfer, or using the beginning or ending of a reporting period. For Level 3 fair value measurements, the new guidance requires presentation of separate information about purchases, sales, issuances and settlements. Additionally, the FASB also clarified existing fair value measurement disclosure requirements relating to the level of disaggregation, inputs, and valuation techniques. This accounting standard was effective at the beginning of 2010, except for the detailed Level 3 disclosures, which </font><font style="font-family:Times New Roman;font-size:10pt;">were</font><font style="font-family:Times New Roman;font-size:10pt;"> effective at the beginning of 2011. The Corporation adopted the accounting standard</font><font style="font-family:Times New Roman;font-size:10pt;"> at the beginning of 2010</font><font style="font-family:Times New Roman;font-size:10pt;">, except for the detailed Level 3 disclosures</font><font style="font-family:Times New Roman;font-size:10pt;"> which were adopted at the beginning of 2011</font><font style="font-family:Times New Roman;font-size:10pt;">, with no material impact on its results of operations, financial position, and liquidity. See Note 16 for additional disclosures required under this accounting standard.</font></p>
CY2010	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	2000000	USD
CY2011Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	42000000	USD
CY2010Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	44000000	USD
CY2011	us-gaap	Finite Lived Intangible Assets Average Useful Life FiniteLivedIntangibleAssetsAverageUsefulLife	14	pure
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CY2011	us-gaap	Finite Lived Intangible Assets Useful Life FiniteLivedIntangibleAssetsUsefulLife	10	pure
CY2011Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	4775400000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	165746000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	3663000	USD
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	6011976000	USD
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	135189000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	45824000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	63147000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	180450000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	557997000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	86899000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	888493000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	64313000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	185425000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	595889000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	91199000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	936826000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	414390000	USD
CY2010Q4	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	3000000000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	-2133000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	-1530000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	237411000	USD
CY2011Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	176979000	USD
CY2011Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1	-3663000	USD
CY2011	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	-818000	USD
CY2011Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	-28393000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	-41910000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	0	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1112000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	28939000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	4022000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	5823000	USD
CY2009	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	14597000	USD
CY2011Q4	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	3300000000	USD
CY2009Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	-24499000	USD
CY2010	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	-3076000	USD
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	-27575000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	-3914000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1	-45824000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	2174784000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	46713000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	2221497000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	121	USD
CY2011Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	70	USD
CY2010Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	2892484000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Consumer Installment And Revolving LoansAndLeasesReceivableConsumerInstallmentAndRevolving	695383000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	2346007000	USD
CY2010Q4	asbc	Loans Receivable Commercial Real Estate Investor LoansReceivableCommercialRealEstateInvestor	2339415000	USD
CY2011Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	3724736000	USD
CY2011Q4	asbc	Loans Receivable Commercial Real Estate Owner Occupied LoansReceivableCommercialRealEstateOwnerOccupied	1086829000	USD
CY2011Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	58194000	USD
CY2011Q4	asbc	Loans Receivable Commercial And Business Lending LoansReceivableCommercialAndBusinessLending	4869759000	USD
CY2011Q4	asbc	Loans Receivable Commercial Real Estate Investor LoansReceivableCommercialRealEstateInvestor	2563767000	USD
CY2011Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	584046000	USD
CY2011Q4	us-gaap	Loans Receivable Commercial Real Estate LoansReceivableCommercialRealEstate	3147813000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	8017572000	USD
CY2011Q4	asbc	Loans And Leases Receivable Home Equity LoansAndLeasesReceivableHomeEquity	2504704000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Consumer Installment And Revolving LoansAndLeasesReceivableConsumerInstallmentAndRevolving	557782000	USD
CY2011Q4	asbc	Loans And Leases Receivable Retail LoansAndLeasesReceivableRetail	3062486000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Consumer Mortgage LoansAndLeasesReceivableConsumerMortgage	2951013000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	6013499000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Consumer LoansAndLeasesReceivableConsumer	5564447000	USD
CY2010Q4	asbc	Loans And Leases Receivable Home Equity LoansAndLeasesReceivableHomeEquity	2523057000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Commercial LoansAndLeasesReceivableCommercial	7052288000	USD
CY2010Q4	asbc	Loans And Leases Receivable Retail LoansAndLeasesReceivableRetail	3218440000	USD
CY2010Q4	us-gaap	Loans Receivable Commercial And Industrial LoansReceivableCommercialAndIndustrial	3049752000	USD
CY2010Q4	asbc	Loans Receivable Commercial And Business Lending LoansReceivableCommercialAndBusinessLending	4159804000	USD
CY2010Q4	us-gaap	Loans Receivable Commercial Construction LoansReceivableCommercialConstruction	553069000	USD
CY2010Q4	asbc	Loans Receivable Commercial Real Estate Owner Occupied LoansReceivableCommercialRealEstateOwnerOccupied	1049798000	USD
CY2010Q4	us-gaap	Leases Receivable Commercial Lease Financing LeasesReceivableCommercialLeaseFinancing	60254000	USD
CY2010Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	50749000	USD
CY2011	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	41222000	USD
CY2011	us-gaap	Loans And Leases Receivable Related Parties Collections LoansAndLeasesReceivableRelatedPartiesCollections	-53821000	USD
CY2011	asbc	Change Due To Status Of Officers And Directors ChangeDueToStatusOfOfficersAndDirectors	-399000	USD
CY2009	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	55785000	USD
CY2011	asbc	Other Noninterest Expenses OtherNoninterestExpenses	621531000	USD
CY2011Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	37751000	USD
CY2011	us-gaap	Allowance For Loan And Lease Losses Provision For Loss Gross AllowanceForLoanAndLeaseLossesProvisionForLossGross	52000000	USD
CY2010	us-gaap	Allowance For Loan And Lease Losses Provision For Loss Gross AllowanceForLoanAndLeaseLossesProvisionForLossGross	390010000	USD
CY2009	us-gaap	Allowance For Loan And Lease Losses Provision For Loss Gross AllowanceForLoanAndLeaseLossesProvisionForLossGross	750645000	USD
CY2011	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-189732000	USD
CY2010	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-528492000	USD
CY2009	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-452206000	USD
CY2011	us-gaap	Allowance For Loan And Lease Losses Recoveries Of Bad Debts AllowanceForLoanAndLeaseLossesRecoveriesOfBadDebts	39070000	USD
CY2010	us-gaap	Allowance For Loan And Lease Losses Recoveries Of Bad Debts AllowanceForLoanAndLeaseLossesRecoveriesOfBadDebts	41762000	USD
CY2009	us-gaap	Allowance For Loan And Lease Losses Recoveries Of Bad Debts AllowanceForLoanAndLeaseLossesRecoveriesOfBadDebts	9716000	USD
CY2011	asbc	Allowance For Loan And Lease Losses Net Charge Offs AllowanceForLoanAndLeaseLossesNetChargeOffs	-150662000	USD
CY2010	asbc	Allowance For Loan And Lease Losses Net Charge Offs AllowanceForLoanAndLeaseLossesNetChargeOffs	-486730000	USD
CY2009	asbc	Allowance For Loan And Lease Losses Net Charge Offs AllowanceForLoanAndLeaseLossesNetChargeOffs	-442490000	USD
CY2009Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	573533000	USD
CY2008Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	265378000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	36809000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	67970000	USD
CY2011Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	273372000	USD
CY2011Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	215478000	USD
CY2011Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	254458000	USD
CY2011Q4	us-gaap	Financing Receivable FinancingReceivable	13561135000	USD
CY2011Q1	asbc	Write Down On Installment Loans Transferred To Held For Sale WriteDownOnInstallmentLoansTransferredToHeldForSale	10000	USD
CY2010Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	210867000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	45937000	USD
CY2010Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	443424000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	332423000	USD
CY2010Q4	us-gaap	Financing Receivable FinancingReceivable	11962444000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	98453000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	46612000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	29844000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue	175181000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	251637000	USD
CY2011Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	13779434000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	95987000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment60 To89 Days Past Due FinancingReceivableRecordedInvestment60To89DaysPastDue	55394000	USD
CY2011Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	469936000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	447049000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	12169686000	USD
CY2010Q4	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue	295668000	USD
CY2011Q4	asbc	Performing Restructured Loans PerformingRestructuredLoans	113164000	USD
CY2011Q4	asbc	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	87493000	USD
CY2010Q4	asbc	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	35939000	USD
CY2010Q4	asbc	Performing Restructured Loans PerformingRestructuredLoans	79935000	USD
CY2011Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	573912000	USD
CY2011Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	104779000	USD
CY2011	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	522649000	USD
CY2011	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	13414000	USD
CY2011	asbc	Interest Income Recognized On Accruing Restructured Loans InterestIncomeRecognizedOnAccruingRestructuredLoans	6000000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	654291000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	748786000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	144390000	USD
CY2010	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	701930000	USD
CY2010	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	15917000	USD
CY2010	asbc	Interest Income Recognized On Accruing Restructured Loans InterestIncomeRecognizedOnAccruingRestructuredLoans	4000000	USD
CY2009Q4	asbc	Average Recorded Investment Impaired Loans AverageRecordedInvestmentImpairedLoans	687000000	USD
CY2009	asbc	Cash Basis Interest Income Impaired Loans CashBasisInterestIncomeImpairedLoans	41000000	USD
CY2011Q4	asbc	Restructured Loans Still Accruing RestructuredLoansStillAccruing	36000000	USD
CY2010Q4	asbc	Restructured Loans Still Accruing RestructuredLoansStillAccruing	8000000	USD
CY2011Q4	asbc	Restructured Loans Subsequently Accruing RestructuredLoansSubsequentlyAccruing	77000000	USD
CY2010Q4	asbc	Restructured Loans Subsequently Accruing RestructuredLoansSubsequentlyAccruing	72000000	USD
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CY2011	asbc	Troubled Debt Restructurings Unpaid Principal Balance TroubledDebtRestructuringsUnpaidPrincipalBalance	149082000	USD
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CY2011	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	17476000	USD
CY2010Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	-20300000	USD
CY2011	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	-7403000	USD
CY2011Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	-27703000	USD
CY2011Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	48152000	USD
CY2011Q4	asbc	Portfolio Of Residential Mortgage Loans Serviced For Others PortfolioOfResidentialMortgageLoansServicedForOthers	7321000000	USD
CY2011Q4	asbc	Mortgage Servicing Rights Net To Servicing Portfolio MortgageServicingRightsNetToServicingPortfolio	0.0066	pure
CY2011Q4	asbc	Mortgage Servicing Rights Expense MortgageServicingRightsExpense	33233000	USD
CY2010Q4	asbc	Portfolio Of Residential Mortgage Loans Serviced For Others PortfolioOfResidentialMortgageLoansServicedForOthers	7453000000	USD
CY2010Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	64378000	USD
CY2010Q4	asbc	Mortgage Servicing Rights Net To Servicing Portfolio MortgageServicingRightsNetToServicingPortfolio	0.0086	pure
CY2009Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	-17233000	USD
CY2010	us-gaap	Servicing Asset At Amortized Value Amortization ServicingAssetAtAmortizedValueAmortization	-22942000	USD
CY2010	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	-3067000	USD
CY2010	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	26165000	USD
CY2010Q4	asbc	Mortgage Servicing Rights Expense MortgageServicingRightsExpense	26009000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	45748000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	103309000	USD
CY2009Q4	asbc	Portfolio Of Residential Mortgage Loans Serviced For Others PortfolioOfResidentialMortgageLoansServicedForOthers	7667000000	USD
CY2011Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	48152000	USD
CY2010Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	63909000	USD
CY2009Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	63753000	USD
CY2009Q4	us-gaap	Servicing Asset At Amortized Value Fair Value ServicingAssetAtAmortizedValueFairValue	66710000	USD
CY2009	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	-6776000	USD
CY2009Q4	asbc	Mortgage Servicing Rights Net To Servicing Portfolio MortgageServicingRightsNetToServicingPortfolio	0.0083	pure
CY2009	us-gaap	Servicing Asset At Amortized Value Amortization ServicingAssetAtAmortizedValueAmortization	-19619000	USD
CY2009	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	44580000	USD
CY2009Q4	asbc	Mortgage Servicing Rights Expense MortgageServicingRightsExpense	26395000	USD
CY2008Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	-10457000	USD
CY2011Q4	asbc	Servicing Asset At Amortized Value Balance ServicingAssetAtAmortizedValueBalance	75855000	USD
CY2010Q4	asbc	Servicing Asset At Amortized Value Balance ServicingAssetAtAmortizedValueBalance	84209000	USD
CY2009Q4	asbc	Servicing Asset At Amortized Value Balance ServicingAssetAtAmortizedValueBalance	80986000	USD
CY2008Q4	asbc	Servicing Asset At Amortized Value Balance ServicingAssetAtAmortizedValueBalance	56025000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	481767000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	258031000	USD
CY2010	us-gaap	Depreciation Depreciation	22	USD
CY2009	us-gaap	Depreciation Depreciation	22	USD
CY2011	us-gaap	Depreciation Depreciation	24	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	13400000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	12340000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	11243000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	10706000	USD
CY2011Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	9872000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	15	USD
CY2009	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	13	USD
CY2010	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	13	USD
CY2011Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2297454000	USD
CY2011Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	5150275000	USD
CY2011Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	986766000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	2253014000	USD
CY2011	asbc	Deposits By Type Tabletext Block DepositsByTypeTabletextBlock	<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="2" style="width: 90px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:90px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2011</font></td><td colspan="2" style="width: 90px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:90px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">2010</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td colspan="4" style="width: 180px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:180px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Times New Roman;FONT-SIZE: 8pt;COLOR: #000000;TEXT-ALIGN: center;">($ in Thousands)</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Noninterest-bearing demand deposits</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 3,928,792</font></td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 3,684,965</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Savings deposits</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 986,766</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 887,236</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Interest-bearing demand deposits</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 2,297,454</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 1,870,664</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Money market deposits</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 5,150,275</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 5,434,867</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Brokered certificates of deposit</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 202,948</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 442,640</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Other time deposits</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 2,524,420</font></td><td style="width: 15px; text-align:left;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 2,905,021</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: left;">Total deposits</font></td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 75px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;"> 15,090,655</font></td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 75px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:75px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">15,225,393</font></td></tr><tr style="height: 16px"><td style="width: 530px; text-align:left;border-color:#000000;min-width:530px;"> </td><td style="width: 10px; text-align:left;border-color:#000000;min-width:10px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:75px;"> </td><td style="width: 15px; text-align:right;border-color:#000000;min-width:15px;"> </td><td style="width: 75px; border-top-style:double;border-top-width:3px;text-align:left;border-color:#000000;min-width:75px;"> </td></tr><tr style="height: 16px"><td colspan="6" style="width: 720px; text-align:left;border-color:#000000;min-width:720px;"><font style="FONT-FAMILY: Times New Roman;FONT-SIZE: 10pt;COLOR: #000000;">Time deposits of $100,000 or more were $1.0 billion at both December 31, 2011 and 2010.</font></td></tr></table></div>
CY2011Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	3928792000	USD
CY2011Q4	asbc	Other Time Deposits OtherTimeDeposits	2524420000	USD
CY2010Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	3684965000	USD
CY2010Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	887236000	USD
CY2010Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	1870664000	USD
CY2010Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	5434867000	USD
CY2010Q4	asbc	Other Time Deposits OtherTimeDeposits	2905021000	USD
CY2011Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	1000000	USD
CY2010Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	1000000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	208465000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	123674000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	38649000	USD
CY2011Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	73168000	USD
CY2011Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	30398000	USD
CY2011Q4	us-gaap	Time Deposits TimeDeposits	2727368000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Short Term FederalHomeLoanBankAdvancesShortTerm	1000000000	USD
CY2011Q4	asbc	Treasury Tax And Loan TreasuryTaxAndLoan	0	USD
CY2010Q4	us-gaap	Federal Home Loan Bank Advances Short Term FederalHomeLoanBankAdvancesShortTerm	1000000000	USD
CY2010Q4	asbc	Treasury Tax And Loan TreasuryTaxAndLoan	28688000	USD
CY2011Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	154730000	USD
CY2010Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	154810000	USD
CY2011Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	1359755000	USD
CY2010Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	563884000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	500476000	USD
CY2011Q4	us-gaap	Senior Notes SeniorNotes	430000000	USD
CY2011Q4	us-gaap	Subordinated Debt SubordinatedDebt	25821000	USD
CY2011Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	211340000	USD
CY2011Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	9434000	USD
CY2010Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	5916000	USD
CY2010Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	211340000	USD
CY2010Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	1000528000	USD
CY2010Q4	us-gaap	Subordinated Debt SubordinatedDebt	195821000	USD
CY2010Q4	us-gaap	Senior Notes SeniorNotes	0	USD
CY2011Q1	asbc	Penalty Paid On Early Extinguishment Of Subordinated Debt PenaltyPaidOnEarlyExtinguishmentOfSubordinatedDebt	1000000	USD
CY2011Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Weighted Average Interest Rate FederalHomeLoanBankAdvancesBranchOfFHLBBankWeightedAverageInterestRate	0.0179	pure
CY2010Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Weighted Average Interest Rate FederalHomeLoanBankAdvancesBranchOfFHLBBankWeightedAverageInterestRate	0.0166	pure
CY2008Q3	us-gaap	Subordinated Borrowing Interest Rate SubordinatedBorrowingInterestRate	0.0925	pure
CY2001Q3	us-gaap	Subordinated Borrowing Interest Rate SubordinatedBorrowingInterestRate	0.0675	pure
CY2010Q3	asbc	Penalty Paid On Early Extinguishment Of Subordinated Debt PenaltyPaidOnEarlyExtinguishmentOfSubordinatedDebt	1000000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	100057000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	400052000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	15000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1684000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	433720000	USD
CY2011Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	241543000	USD
CY2011Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	3600000000	USD
CY2010Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	900000000	USD
CY2008Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	525000	shares
CY2008Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2008Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2008Q4	us-gaap	Preferred Stock Value PreferredStockValue	525000000	USD
CY2008Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	508000000	USD
CY2011	asbc	Depositary Shares Issued As An Interest In Eight Percent Perpetual Preferred Stock DepositarySharesIssuedAsAnInterestInEightPercentPerpetualPreferredStock	On September 14, 2011, the Corporation issued 2,600,000 depositary shares, each representing a 1/40th interest in a share of the Corporation’s 8.00% Perpetual Preferred Stock, Series B, liquidation preference $1,000 per share (the “Series B Preferred Stock”).
CY2011Q4	asbc	Depositary Shares Issued DepositarySharesIssued	2600000	shares
CY2011Q4	asbc	Rate On Depositary Shares Issued RateOnDepositarySharesIssued	0.08	pure
CY2011Q4	asbc	Liquidation Preference On Depositary Shares LiquidationPreferenceOnDepositaryShares	1000
CY2011Q4	asbc	Depositary Share Per Share Value DepositarySharePerShareValue	25
CY2010Q1	asbc	Common Stock Underwritten Public Offering Number Of Shares CommonStockUnderwrittenPublicOfferingNumberOfShares	44800000	shares
CY2010Q1	asbc	Common Stock Underwritten Public Offering Price CommonStockUnderwrittenPublicOfferingPrice	11.15	USD
CY2010Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	478000000	USD
CY2011Q4	asbc	Subsidiary Equity Balance SubsidiaryEquityBalance	3300000000	USD
CY2011Q4	us-gaap	Amount Available For Dividend Distribution Without Prior Approval From Regulatory Agency AmountAvailableForDividendDistributionWithoutPriorApprovalFromRegulatoryAgency	94000000	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	467000	USD
CY2010	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	467000	USD
CY2009	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Credit Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostBeforeTax	467000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	14810000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-2271000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-2736000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	-5674000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	1106000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	1236000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-8669000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	1632000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	1967000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-557000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-4542000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-1814000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax	-4708000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax	-6013000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax	-8540000	USD
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	1658000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.4724	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.4538	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3600	pure
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	499000	USD
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	2718000	USD
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	2493000	USD
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	972000	USD
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	4008000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	37976000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-35806000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	73122000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	71606000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	-1112000	USD
CY2011	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	28566000	USD
CY2011	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	44152000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-38278000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	24917000	USD
CY2010	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	-24785000	USD
CY2010	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-38410000	USD
CY2009	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	8774000	USD
CY2009	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	37534000	USD
CY2009	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	67147000	USD
CY2009	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	113455000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	9000000	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0200	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0300	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0495	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0227	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0270	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0187	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6	pure
CY2011	asbc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Per Share Fair Value Of Stock Options ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsPerShareFairValueOfStockOptions	5.56
CY2010	asbc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Per Share Fair Value Of Stock Options ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsPerShareFairValueOfStockOptions	4.60
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Term ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm	6	pure
CY2009	asbc	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Per Share Fair Value Of Stock Options ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsPerShareFairValueOfStockOptions	3.60
CY2008Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6581702	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	975548	shares
CY2010	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	-14868	shares
CY2009	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	-945	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-847687	shares
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6708618	shares
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4811626	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1348474	shares
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	27.73
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	13.24
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	12.71
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	20.95
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	24.33
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	27.60
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	14.20
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	12.66
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	24.51
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	21.99
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4623935	shares
CY2008Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	27.45
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	17.05
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	16.70
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	25.73
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	26.16
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	27000	USD
CY2011Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	7000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2460000	USD
CY2010Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	63000	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-740766	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7301458	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	5275738	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1624369	shares
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	-23437	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-1847116	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7055274	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	26.10
CY2009Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1	5.61	pure
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm	4.50	pure
CY2010Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1	5.01	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm	3.63	pure
CY2011Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm1	5.61	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm	4.01	pure
CY2011Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	7055274	shares
CY2011Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	4623935	shares
CY2011Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	21.99
CY2011Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	26.10
CY2011Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm1	5.61	pure
CY2011	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	0.3	USD
CY2009	asbc	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Options Vested In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedInPeriodFairValue	3000000	USD
CY2010	asbc	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Options Vested In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedInPeriodFairValue	4000000	USD
CY2011	asbc	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Options Vested In Period Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOptionsVestedInPeriodFairValue	4000000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5000000	USD
CY2008Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	354327	shares
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	527131	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	772262	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	371643	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	604343	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	593437	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	-146320	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	-205239	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	-169499	shares
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	-52519	shares
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	-153973	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	-182435	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1013765	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.27
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	17.74
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue	13.86
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	13.79
CY2008Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	26.75
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	16.48
CY2009	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	27.96
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	19.67
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue	21.80
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	12.38
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	13.94
CY2010	us-gaap	Deferred Compensation Arrangement With Individual Shares Issued DeferredCompensationArrangementWithIndividualSharesIssued	244062	shares
CY2011	us-gaap	Deferred Compensation Arrangement With Individual Shares Issued DeferredCompensationArrangementWithIndividualSharesIssued	317450	shares
CY2010	asbc	Average Cost Per Share Salary Share AverageCostPerShareSalaryShare	13.43	USD
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	21.68
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue	17.12
CY2011	asbc	Percent In Restricted Shares Vested In Increments As Funds Are Paid PercentInRestrictedSharesVestedInIncrementsAsFundsArePaid	0.25	pure
CY2011	asbc	Average Cost Per Share Salary Share AverageCostPerShareSalaryShare	12.41	USD
CY2009	asbc	Average Cost Per Share Salary Share AverageCostPerShareSalaryShare	11.06	USD
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMaximum	0.45	pure
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Other Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsOtherRangeMinimum	0	pure
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Other Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsOtherRangeMaximum	0.15	pure
CY2011	asbc	Defined Benefit Plan Actual Return On Plan Assets Percentage DefinedBenefitPlanActualReturnOnPlanAssetsPercentage	0.0411	pure
CY2010	asbc	Defined Benefit Plan Actual Return On Plan Assets Percentage DefinedBenefitPlanActualReturnOnPlanAssetsPercentage	0.1204	pure
CY2011Q4	asbc	Defined Benefit Postretirement Plan Health Care Access Eligibility Terms1 DefinedBenefitPostretirementPlanHealthCareAccessEligibilityTerms1	55	pure
CY2011	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0775	pure
CY2010	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.08	pure
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMinimum	0.55	pure
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMaximum	0.65	pure
CY2011	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMinimum	0.35	pure
CY2011Q4	us-gaap	Defined Benefit Plan Equity Securities DefinedBenefitPlanEquitySecurities	0.65	pure
CY2011Q4	us-gaap	Defined Benefit Plan Debt Securities DefinedBenefitPlanDebtSecurities	0.34	pure
CY2011Q4	us-gaap	Defined Benefit Plan Other Plan Assets DefinedBenefitPlanOtherPlanAssets	0.01	pure
CY2011Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2010Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2010Q4	us-gaap	Defined Benefit Plan Equity Securities DefinedBenefitPlanEquitySecurities	0.64	pure
CY2010Q4	us-gaap	Defined Benefit Plan Other Plan Assets DefinedBenefitPlanOtherPlanAssets	0.01	pure
CY2010Q4	us-gaap	Defined Benefit Plan Debt Securities DefinedBenefitPlanDebtSecurities	0.35	pure
CY2011Q4	asbc	Defined Benefit Plan Fair Value Of Plan Assets Money Market Accounts DefinedBenefitPlanFairValueOfPlanAssetsMoneyMarketAccounts	1690000	USD
CY2011Q4	asbc	Defined Benefit Plan Fair Value Of Plan Assets Mutual Funds DefinedBenefitPlanFairValueOfPlanAssetsMutualFunds	92026000	USD
CY2011Q4	asbc	Defined Benefit Plan Fair Value Of Plan Assets Commoncollective Trust Funds DefinedBenefitPlanFairValueOfPlanAssetsCommoncollectiveTrustFunds	79706000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	173422000	USD
CY2010Q4	asbc	Defined Benefit Plan Fair Value Of Plan Assets Money Market Accounts DefinedBenefitPlanFairValueOfPlanAssetsMoneyMarketAccounts	861000	USD
CY2010Q4	asbc	Defined Benefit Plan Fair Value Of Plan Assets Mutual Funds DefinedBenefitPlanFairValueOfPlanAssetsMutualFunds	78046000	USD
CY2010Q4	asbc	Defined Benefit Plan Fair Value Of Plan Assets Commoncollective Trust Funds DefinedBenefitPlanFairValueOfPlanAssetsCommoncollectiveTrustFunds	80884000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	159791000	USD
CY2011	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	26000000	USD
CY2010	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	20000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	10000000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	15000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	305000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents	-13000	USD
CY2011	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation	-266000	USD
CY2010	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	17000	USD
CY2010	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	343000	USD
CY2010	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents	-16000	USD
CY2010	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation	-317000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	9000000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8000000	USD
CY2009	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	7017000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	276757000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9336000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-350000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8986000	USD
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CY2010Q4	asbc	Written Deposit Option At Fair Value WrittenDepositOptionAtFairValue	0	USD
CY2011Q4	asbc	Foreign Currency Contracts Assets ForeignCurrencyContractsAssets	2079000	USD
CY2010Q4	asbc	Foreign Currency Contracts Assets ForeignCurrencyContractsAssets	1530000	USD
CY2011Q4	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	39000000	USD
CY2010	asbc	Other Noninterest Expenses OtherNoninterestExpenses	595293000	USD
CY2011	asbc	Noninterest Incomes NoninterestIncomes	308299000	USD
CY2010	asbc	Noninterest Incomes NoninterestIncomes	368465000	USD
CY2009	asbc	Noninterest Incomes NoninterestIncomes	370580000	USD
CY2011	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	64172000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	6935000	USD
CY2011	asbc	Unvested Share Based Payment Awards UnvestedShareBasedPaymentAwards	42000	USD
CY2011	us-gaap	Undistributed Earnings UndistributedEarnings	107892000	USD
CY2011	asbc	Distributed Earnings To Common Shareholders Basic DistributedEarningsToCommonShareholdersBasic	-6935000	USD
CY2011	asbc	Undistributed Earnings Basic UndistributedEarningsBasic	107231000	USD
CY2011	asbc	Common Shareholders Earnings Basic CommonShareholdersEarningsBasic	114166000	USD
CY2011	asbc	Distributed Earnings To Common Shareholders Diluted DistributedEarningsToCommonShareholdersDiluted	-6935000	USD
CY2011	asbc	Undistributed Earnings To Common Shareholders Diluted UndistributedEarningsToCommonShareholdersDiluted	107231000	USD
CY2011	asbc	Common Shareholders Earnings Diluted CommonShareholdersEarningsDiluted	114166000	USD
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2010	asbc	Undistributed Earnings To Common Shareholders Diluted UndistributedEarningsToCommonShareholdersDiluted	-37335000	USD
CY2010	asbc	Unvested Share Based Payment Awards UnvestedShareBasedPaymentAwards	30000	USD
CY2010	us-gaap	Undistributed Earnings UndistributedEarnings	-37335000	USD
CY2010	asbc	Common Shareholders Earnings Diluted CommonShareholdersEarningsDiluted	-30417000	USD
CY2010	asbc	Undistributed Earnings Basic UndistributedEarningsBasic	-37335000	USD
CY2010	us-gaap	Dividends Common Stock DividendsCommonStock	6918000	USD
CY2010	asbc	Distributed Earnings To Common Shareholders Basic DistributedEarningsToCommonShareholdersBasic	-6918000	USD
CY2010	asbc	Common Shareholders Earnings Basic CommonShareholdersEarningsBasic	-30417000	USD
CY2010	asbc	Distributed Earnings To Common Shareholders Diluted DistributedEarningsToCommonShareholdersDiluted	-6918000	USD
CY2009	us-gaap	Undistributed Earnings UndistributedEarnings	-221557000	USD
CY2009	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2009	asbc	Unvested Share Based Payment Awards UnvestedShareBasedPaymentAwards	248000	USD
CY2009	asbc	Distributed Earnings To Common Shareholders Diluted DistributedEarningsToCommonShareholdersDiluted	-60102000	USD
CY2009	asbc	Common Shareholders Earnings Diluted CommonShareholdersEarningsDiluted	-161455000	USD
CY2009	asbc	Common Shareholders Earnings Basic CommonShareholdersEarningsBasic	-161455000	USD
CY2009	asbc	Undistributed Earnings Basic UndistributedEarningsBasic	-221557000	USD
CY2009	asbc	Undistributed Earnings To Common Shareholders Diluted UndistributedEarningsToCommonShareholdersDiluted	-221557000	USD
CY2009	us-gaap	Dividends Common Stock DividendsCommonStock	60102000	USD
CY2009	asbc	Distributed Earnings To Common Shareholders Basic DistributedEarningsToCommonShareholdersBasic	-60102000	USD
CY2009	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	8000000	shares
CY2009	asbc	Other Noninterest Expenses OtherNoninterestExpenses	575254000	USD
CY2009Q4	us-gaap	Assets Assets	22874142000	USD
CY2011	us-gaap	Revenues Revenues	921130000	USD
CY2010	us-gaap	Revenues Revenues	1002244000	USD
CY2009	us-gaap	Revenues Revenues	1096585000	USD
CY2011	asbc	Percentage Of Consolidated Net Income Loss PercentageOfConsolidatedNetIncomeLoss	1.00	pure
CY2011Q4	asbc	Percentage Of Consolidated Assets PercentageOfConsolidatedAssets	1.00	pure
CY2011	asbc	Percentage Of Consolidated Revenues PercentageOfConsolidatedRevenues	1.00	pure
CY2010	asbc	Percentage Of Consolidated Revenues PercentageOfConsolidatedRevenues	1.00	pure
CY2010Q4	asbc	Percentage Of Consolidated Assets PercentageOfConsolidatedAssets	1.00	pure
CY2009Q4	asbc	Percentage Of Consolidated Assets PercentageOfConsolidatedAssets	1.00	pure
CY2009	asbc	Percentage Of Consolidated Revenues PercentageOfConsolidatedRevenues	1.00	pure
CY2010	asbc	Percentage Of Consolidated Net Income Loss Nm PercentageOfConsolidatedNetIncomeLossNm	N/M
CY2009	asbc	Percentage Of Consolidated Net Income Loss Nm PercentageOfConsolidatedNetIncomeLossNm	N/M

Files In Submission

Name	View Source	Status
0001193125-12-082677-index-headers.html	Edgar Link	pending
0001193125-12-082677-index.html	Edgar Link	pending
0001193125-12-082677.txt	Edgar Link	pending
0001193125-12-082677-xbrl.zip	Edgar Link	pending
asbc-20111231.xml	Edgar Link	completed
asbc-20111231.xsd	Edgar Link	pending
asbc-20111231_cal.xml	Edgar Link	unprocessable
asbc-20111231_def.xml	Edgar Link	unprocessable
asbc-20111231_lab.xml	Edgar Link	unprocessable
asbc-20111231_pre.xml	Edgar Link	unprocessable
d292916d10k.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
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$ASB
ASSOCIATED BANC-CORP Stock $asb

2011 Q4 Form 10-K Financial Statement

#000119312512082677 Filed on February 28, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ASB ASSOCIATED BANC-CORP Stock $asb

2011 Q4 Form 10-K Financial Statement

#000119312512082677 Filed on February 28, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ASB
ASSOCIATED BANC-CORP Stock $asb