Percentage of discretionary contributions made by an employer to a defined contribution plan.

No definition available.

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- Definition

Maximum amount matched by the employer, per employee, under a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Schedule Of Defined Contribution Plans Disclosures [Line Items]

+ References

No definition available.

+ Details

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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- Definition

Maximum amount the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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- Details

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Employee Benefit Plans - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, cost	$ 13,000,000	$ 13,500,000	$ 13,700,000
ACI 401(k) Plan
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, cost	$ 6,000,000	6,300,000	6,400,000
Defined contribution plan, maximum annual contribution per employee, percentage	75.00%
Defined contribution plan, employer matching contribution, percentage of match	100.00%
Defined contribution plan, employer matching contribtuion, percent of eligible participant contributions	4.00%
Defined contribution plan, employer matching contribution, maximum amount per employee	$ 5,000
ACI 401(k) Plan \| Employees under Age 50
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, maximum annual contribution per employee, amount	19,500
ACI 401(k) Plan \| Employees Aged 50 or Older
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, maximum annual contribution per employee, amount	$ 26,000
ACI 401(k) Plan \| Second Eligible Participant Contributions
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, employer matching contribution, percentage of match	50.00%
ACI 401(k) Plan \| Second Eligible Participant Contributions \| Maximum
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, employer matching contribtuion, percent of eligible participant contributions	4.00%
ACI Worldwide EMEA Group Personal Pension Scheme
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, cost	$ 1,600,000	$ 1,500,000	$ 1,500,000
ACI Worldwide EMEA Group Personal Pension Scheme \| Employed at December 1, 2000
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, employer discretionary contribution, percentage of eligible compensation	8.50%
ACI Worldwide EMEA Group Personal Pension Scheme \| Employed Subsequent to December 1, 2000 \| Minimum
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, employer discretionary contribution, percentage of eligible compensation	6.00%
ACI Worldwide EMEA Group Personal Pension Scheme \| Employed Subsequent to December 1, 2000 \| Maximum
Schedule Of Defined Contribution Plans Disclosures [Line Items]
Defined contribution plan, employer discretionary contribution, percentage of eligible compensation	10.00%