XML 69 R50.htm IDEA: XBRL DOCUMENT v3.22.0.1

Summary of Significant Accounting Policies - Schedule of Components of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Intangible Assets
Amortization period of intangible assets	8 years
Initial Cost	$ 1,559.5	$ 1,549.6
Net of Accumulated Amortization	467.5
Net of Accumulated Amortization	417.1	505.0
Capitalized Contract Costs
Other Intangible Assets
Initial Cost	532.7	574.4
Net of Accumulated Amortization	242.0
Net of Accumulated Amortization		308.0
Acquired Contracts
Other Intangible Assets
Initial Cost	552.9	561.7
Net of Accumulated Amortization	50.2
Net of Accumulated Amortization		75.8
Internal Use Software
Other Intangible Assets
Initial Cost	388.7	310.3
Net of Accumulated Amortization	128.8
Net of Accumulated Amortization		55.5
Acquired Trademarks
Other Intangible Assets
Initial Cost	30.1	30.1
Net of Accumulated Amortization	10.8
Net of Accumulated Amortization		12.0
Other Intangibles
Other Intangible Assets
Initial Cost	19.4	19.4
Projects in Process
Other Intangible Assets
Initial Cost	35.7	53.7
Net of Accumulated Amortization	$ 35.7
Net of Accumulated Amortization		$ 53.7
Weighted Average | Capitalized Contract Costs
Other Intangible Assets
Amortization period of intangible assets	6 years 2 months 12 days
Weighted Average | Acquired Contracts
Other Intangible Assets
Amortization period of intangible assets	11 years 7 months 6 days
Weighted Average | Internal Use Software
Other Intangible Assets
Amortization period of intangible assets	4 years 3 months 18 days
Weighted Average | Acquired Trademarks
Other Intangible Assets
Amortization period of intangible assets	25 years 4 months 24 days
Weighted Average | Other Intangibles
Other Intangible Assets
Amortization period of intangible assets	4 years 3 months 18 days

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

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

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

X

- References

No definition available.

+ Details

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

X

- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

+ Details

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

X

- Definition

Intangible assets including assets held for sale excluding goodwill, net.

+ References

No definition available.

+ Details

Name:	wu_IntangibleAssetsIncludingAssetsHeldForSaleExcludingGoodwillNet
Namespace Prefix:	wu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

Name:	srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: