Long-Term Debt - Additional Information (Detail) (USD $) In Billions, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Debt Instrument [Line Items]
Revolving credit facility with a syndicate of banks	$ 2.0
Borrowing Outstanding	$ 1.0
Variable interest rate on revolving credit facility	1.30%
Revolving credit facility, expiration date	Aug. 01, 2017
Consolidated net debt to consolidated net earnings before interest, taxes depreciation and amortization and other adjustments ratio	3.5
Consolidated earnings before interest, taxes depreciation and amortization and other adjustments to interest expense ratio	3
Revolving credit facility, amendment date	Oct. 25, 2013

Debt to Earnings Before Interest Taxes Depreciation Amortization Ratio Maximum for Covenant Compliance

No definition available.

Name:	fisv_DebtToEarningsBeforeInterestTaxesDepreciationAmortizationRatioMaximumForCovenantCompliance
Namespace Prefix:	fisv_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Amendment Date

+ References

No definition available.

+ Details

Name:	fisv_LineOfCreditFacilityAmendmentDate
Namespace Prefix:	fisv_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Ratio Of Earnings Before Income Taxes Depreciation Amortization To Interest Expense Minimum For Covenant Compliance

+ References

No definition available.

+ Details

Name:	fisv_RatioOfEarningsBeforeIncomeTaxesDepreciationAmortizationToInterestExpenseMinimumForCovenantCompliance
Namespace Prefix:	fisv_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ 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 210.5-02.19(b),22(b))

-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 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant