Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

+ Details

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=123455525&loc=d3e2207-128464

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472

+ Details

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

- Details

Name:	us-gaap_BusinessAcquisitionAxis=gpn_ZegoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=gpn_TotalSystemServicesInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelatedIntangibleAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_ContractBasedIntangibleAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TechnologyBasedIntangibleAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksAndTradeNamesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

ACQUISITIONS - Fair Value of Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
	Sep. 18, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 10, 2021
Zego
Business Acquisition [Line Items]
Estimated Fair Values		$ 473,000			$ 410,443
Weighted-Average Estimated Amortization Periods		14 years
Total System Services, Inc.
Business Acquisition [Line Items]
Estimated Fair Values	$ 10,980,000		$ 10,980,978	$ 10,980,000
Weighted-Average Estimated Amortization Periods	13 years
Customer-related intangible assets
Business Acquisition [Line Items]
Weighted-Average Estimated Amortization Periods		11 years 10 months 24 days	8 years 10 months 24 days	15 years 1 month 6 days
Customer-related intangible assets \| Zego
Business Acquisition [Line Items]
Estimated Fair Values		$ 208,000
Weighted-Average Estimated Amortization Periods		13 years
Customer-related intangible assets \| Total System Services, Inc.
Business Acquisition [Line Items]
Estimated Fair Values	$ 6,420,000
Weighted-Average Estimated Amortization Periods	15 years
Contract-based intangible assets
Business Acquisition [Line Items]
Weighted-Average Estimated Amortization Periods		18 years 6 months	9 years 9 months 18 days	17 years 8 months 12 days
Contract-based intangible assets \| Zego
Business Acquisition [Line Items]
Estimated Fair Values		$ 119,000
Weighted-Average Estimated Amortization Periods		20 years
Contract-based intangible assets \| Total System Services, Inc.
Business Acquisition [Line Items]
Estimated Fair Values	$ 1,800,000
Weighted-Average Estimated Amortization Periods	18 years
Acquired technologies
Business Acquisition [Line Items]
Weighted-Average Estimated Amortization Periods		6 years	5 years	6 years 10 months 24 days
Acquired technologies \| Zego
Business Acquisition [Line Items]
Estimated Fair Values		$ 124,000
Weighted-Average Estimated Amortization Periods		6 years
Acquired technologies \| Total System Services, Inc.
Business Acquisition [Line Items]
Estimated Fair Values	$ 1,810,000
Weighted-Average Estimated Amortization Periods	7 years
Trademarks and trade names
Business Acquisition [Line Items]
Weighted-Average Estimated Amortization Periods		15 years		10 years 8 months 12 days
Trademarks and trade names \| Zego
Business Acquisition [Line Items]
Estimated Fair Values		$ 22,000
Weighted-Average Estimated Amortization Periods		15 years
Trademarks and trade names \| Total System Services, Inc.
Business Acquisition [Line Items]
Estimated Fair Values	$ 950,000
Weighted-Average Estimated Amortization Periods	11 years