Finance Lease, Liability And Other, Current

No definition available.

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Namespace Prefix:	fisv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Finance Lease, Liability And Other, Noncurrent

+ References

No definition available.

+ Details

Name:	fisv_FinanceLeaseLiabilityAndOtherNoncurrent
Namespace Prefix:	fisv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of long-term debt and lease obligation, classified as noncurrent.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- References

No definition available.

+ Details

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

Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2020	May 13, 2020	Dec. 31, 2019
Short-term debt and current maturities of long-term debt:
Short-term debt and current maturities of long-term debt	$ 359		$ 287
Finance lease and other financing obligations	210		137
Long-term debt:
Unamortized discount and unamortized deferred financing costs	(166)		(160)
Finance lease and other financing obligations	492		247
Total long-term debt	21,515		21,612
Line of Credit \| Term loan facility
Long-term debt:
Long-term debt	1,750		3,950
Line of Credit \| Revolving credit facility
Long-term debt:
Long-term debt	$ 960		174
Senior Notes \| 2.7% senior notes due 2020
Debt Instrument [Line Items]
Interest rate, stated percentage	2.70%
Long-term debt:
Long-term debt	$ 0		850
Senior Notes \| 4.75% senior notes due 2021
Debt Instrument [Line Items]
Interest rate, stated percentage	4.75%
Long-term debt:
Long-term debt	$ 400		400
Senior Notes \| 3.5% senior notes due 2022
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%
Long-term debt:
Long-term debt	$ 700		700
Senior Notes \| 3.8% senior notes due 2023
Debt Instrument [Line Items]
Interest rate, stated percentage	3.80%
Long-term debt:
Long-term debt	$ 1,000		1,000
Senior Notes \| 0.375% senior notes due 2023
Debt Instrument [Line Items]
Interest rate, stated percentage	3.75%
Long-term debt:
Long-term debt	$ 561		559
Senior Notes \| 2.75% senior notes due 2024
Debt Instrument [Line Items]
Interest rate, stated percentage	2.75%
Long-term debt:
Long-term debt	$ 2,000		2,000
Senior Notes \| 3.85% senior notes due 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	3.85%
Long-term debt:
Long-term debt	$ 900		900
Senior Notes \| 2.25% senior notes due 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	2.25%
Long-term debt:
Long-term debt	$ 648		687
Senior Notes \| 3.2% senior notes due 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	3.20%
Long-term debt:
Long-term debt	$ 2,000		2,000
Senior Notes \| 1.125% senior notes due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	1.125%
Long-term debt:
Long-term debt	$ 561		559
Senior Notes \| 2.25% senior notes due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	2.25%	2.25%
Long-term debt:
Long-term debt	$ 1,000		0
Senior Notes \| 4.2% senior notes due 2028
Debt Instrument [Line Items]
Interest rate, stated percentage	4.20%
Long-term debt:
Long-term debt	$ 1,000		1,000
Senior Notes \| 3.5% senior notes due 2029
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%
Long-term debt:
Long-term debt	$ 3,000		3,000
Senior Notes \| 1.625% senior notes due 2030
Debt Instrument [Line Items]
Interest rate, stated percentage	1.625%
Long-term debt:
Long-term debt	$ 561		559
Senior Notes \| 2.65% senior notes due 2030
Debt Instrument [Line Items]
Interest rate, stated percentage	2.65%	2.65%
Long-term debt:
Long-term debt	$ 1,000		0
Senior Notes \| 3.0% senior notes due 2031
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%
Long-term debt:
Long-term debt	$ 648		687
Senior Notes \| 4.4% senior notes due 2049
Debt Instrument [Line Items]
Interest rate, stated percentage	4.40%
Long-term debt:
Long-term debt	$ 2,000		2,000
Receivable securitized loan
Long-term debt:
Long-term debt	500		500
Line of Credit
Short-term debt and current maturities of long-term debt:
Short-term debt and current maturities of long-term debt	$ 149		$ 150