XML 15 R39.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Nature of Business and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 0 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 10, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Summary Of Significant Accounting Policies [Line Items] |  |  |
Common stock, par value | $ 0.005 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.005 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.005 us-gaap_CommonStockParOrStatedValuePerShare
Description of Stock split | Three-for-one | On April 10, 2014, the Company announced that its Board of Directors approved a three-for-one stock split of the Company's common stock, which was affected in the form of a common stock dividend distributed on July 10, 2014. |
Payments for partnership dissolved |  | $ 1,391,000 us-gaap_PaymentsToMinorityShareholders |
Percentage of receivables |  | No customer accounted for more than 10% of the Company's consolidated receivables balance as of December 31, 2014 or 2013. | No customer accounted for more than 10% of the Company's consolidated receivables balance as of December 31, 2014 or 2013.
Amount of off balance sheet settlement funds |  | 224,900,000 aciw_SettlementAccountsBalance | 284,000,000 aciw_SettlementAccountsBalance
Goodwill measurement period |  | 1 year |
Cornastone Technology Investments (Proprietary) Limited |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Payments for partnership dissolved |  | 1,500,000 us-gaap_PaymentsToMinorityShareholders / dei_LegalEntityAxis = aciw_CornastoneTechnologyInvestmentsMember |
Minimum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life |  | 3 years |
Minimum | Software Acquired or Developed for Internal Use |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life |  | 3 years |
Maximum |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life |  | 20 years |
Maximum | Software Acquired or Developed for Internal Use |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life |  | 10 years |
Other Noncurrent Liabilities | Cornastone Technology Investments (Proprietary) Limited |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Noncontrolling interest |  |  | $ 1,100,000 us-gaap_MinorityInterest / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / dei_LegalEntityAxis = aciw_CornastoneTechnologyInvestmentsMember

X
- Definition Goodwill Impairment Test Period + References No definition available. + Details
Name: | aciw_GoodwillImpairmentTestPeriod
Namespace Prefix: | aciw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The balance of the settlement accounts at period end. Settlement accounts are trust accounts maintained for the benefit of the Company's clients. They are not included in the Company's balance sheet. + References No definition available. + Details
Name: | aciw_SettlementAccountsBalance
Namespace Prefix: | aciw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | aciw_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | aciw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Description of risks that arise due to the volume of business transacted with a particular customer. At a minimum, the description informs financial statement users of the general nature of the risk, but excludes "Information about Major Customers" that may be disclosed elsewhere (for instance, segment disclosures). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
Name: | us-gaap_ConcentrationRiskCustomer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 27 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 7 + Details
Name: | us-gaap_MinorityInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsToMinorityShareholders
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Description of the stock split arrangement. Also provide the retroactive effect given by a stock split that occurs after the balance date but before the release of financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Stock Split -URI http://asc.fasb.org/extlink&oid=6525746 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C + Details
Name: | us-gaap_StockholdersEquityNoteStockSplit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=aciw_CornastoneTechnologyInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |