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Corporate Restructuring and Other Organizational Changes - Additional Information (Detail) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Restructuring Cost and Reserve [Line Items] |  |  |
Employee termination costs (adjustments) | $ 1,300,000 us-gaap_SeveranceCosts1 | $ 1,800,000 us-gaap_SeveranceCosts1 |
Employee termination costs paid during the period | 1,100,000 aciw_PaymentOfEmployeeTerminationCosts | 1,600,000 aciw_PaymentOfEmployeeTerminationCosts |
Liability is expected to be paid | 12 months | 12 months |
Unpaid severance liability | 2,000,000 us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent |  |
Remaining liability paid to employees | 1,500,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent |  |
Restructuring charges | 2,407,000 us-gaap_RestructuringReserve |  | 2,793,000 us-gaap_RestructuringReserve
Other Noncurrent Liabilities [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 500,000 us-gaap_RestructuringReserve / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember |  |
Severance [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 2,001,000 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  | 2,341,000 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember
Employee Compensation [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 1,500,000 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = aciw_EmployeeCompensationMember |  |
Facility Closures [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring charges | 406,000 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember |  | 452,000 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember
Americas [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Employee termination costs (adjustments) | 700,000 us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember | 1,700,000 us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = us-gaap_AmericasMember |
EMEA [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Employee termination costs (adjustments) | 600,000 us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember | 100,000 us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember |
Asia/Pacific [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Employee termination costs (adjustments) |  | $ 100,000 us-gaap_SeveranceCosts1 / us-gaap_StatementGeographicalAxis = us-gaap_AsiaPacificMember |

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