XML 123 R103.htm IDEA: XBRL DOCUMENT
v3.22.4

Borrowings - Narrative (Details) - USD ($) $ in Millions |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 04, 2022 | Mar. 09, 2021 | Mar. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Nov. 25, 2019 | Dec. 18, 2018 | Jun. 18, 2018 | Aug. 22, 2017 | Mar. 15, 2017 | Oct. 31, 2016 | Jun. 21, 2010 | Nov. 17, 2006
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average effective interest rate (as a percent) |  |  |  |  | 3.90% |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  | $ 2,630.0 |  | $ 3,025.0 |  |  |  |  |  |  |  |  |
Repayment of long-term debt |  |  |  |  | 300.0 |  | 1,150.0 |  |  |  |  |  |  |  |  |
Total premium paid to redeem |  |  |  |  |  |  | 14.3 |  |  |  |  |  |  |  |  |
Commercial Paper |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Threshold over which Commercial Paper Program limit will be reduced for borrowings on Revolving Credit Facility |  |  |  |  | $ 1,500.0 |  |  |  |  |  |  |  |  |  |  |
Maximum days to maturity |  |  |  |  | 397 days |  |  |  |  |  |  |  |  |  |  |
Weighted-average effective interest rate (as a percent) |  |  |  |  | 4.60% |  |  |  |  |  |  |  |  |  |  |
Weighted-average term |  |  |  |  | 3 days |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  | $ 180.0 |  | 275.0 |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  | $ 1,500.0 |  |  |  |  |  |
EBITDA interest coverage ratio |  |  |  |  | 300 |  |  |  |  |  |  |  |  |  |  |
Interest rate margin on revolving credit facility (as a percent) |  |  |  |  | 1.10% |  |  |  |  |  |  |  |  |  |  |
Facility fee (as a percent) |  |  |  |  | 0.15% |  |  |  |  |  |  |  |  |  |  |
Revolver balance outstanding at the end of period |  |  |  |  | $ 0.0 |  | 0.0 |  |  |  |  |  |  |  |  |
Letter of Credit Sub-Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  | 250.0 |  |  |  |  |  |
Term Loan Facility Borrowing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value | [1] |  |  |  |  |  | 300.0 |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  | $ 950.0 |  |  |  |  |  |
Outstanding borrowings under term loan facility |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 575.0 |  |
Repayment of long-term debt |  | $ 300.0 |  | $ 650.0 |  |  |  |  |  |  |  |  |  |  |  |
1.350% Notes Due 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  | $ 600.0 | $ 600.0 | $ 600.0 | [2] | $ 600.0 | [2] |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  | 1.35% | 1.35% |  | 1.35% |  |  |  |  |  |  |  |  |
Repurchase provisions, percentage of principal |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |
1.350% Notes Due 2026 | Base Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on applicable treasury rate (as a percent) |  |  | 0.15% |  |  |  |  |  |  |  |  |  |  |  |  |
2.750% Notes Due 2031 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  | $ 300.0 |  | $ 300.0 | [2] | $ 300.0 | [2] |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  | 2.75% |  | 2.75% |  | 2.75% |  |  |  |  |  |  |  |  |
Repurchase provisions, percentage of principal |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |
2.750% Notes Due 2031 | Base Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on applicable treasury rate (as a percent) |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |
2.850% Notes Due 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  | $ 500.0 | [2] | $ 500.0 | [2] | $ 500.0 |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  | 2.85% |  | 2.85% |  | 2.85% |  |  |  |  |  |  |
Premium on early redemptions (as a percent) |  |  |  |  | 0.20% |  |  |  |  |  |  |  |  |  |  |
Repurchase provisions, percentage of principal |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |
2.850% Notes Due 2025 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  |  |  |  |  |  |  | 4.85% |  |  |  |  |  |  |
2.850% Notes Due 2025 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  |  |  |  |  |  |  | 2.85% |  |  |  |  |  |  |
4.250% Notes Due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  | $ 300.0 | [2] | $ 300.0 | [2] |  |  | $ 300.0 |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  | 4.25% |  | 4.25% |  |  |  | 4.25% |  |  |  |  |
Premium on early redemptions (as a percent) |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |
Repurchase provisions, percentage of principal |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |
4.250% Notes Due 2023 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  | 6.25% |  |  |  |  |
4.250% Notes Due 2023 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  | 4.25% |  |  |  |  |
3.600% Notes Due 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  |  |  | $ 500.0 |  |  |  |  | $ 100.0 | $ 400.0 |  |  |
Stated interest rate (as a percent) |  |  |  |  | 3.60% |  |  |  |  |  |  |  |  |  |  |
Total premium paid to redeem |  |  |  |  |  |  | 14.3 |  |  |  |  |  |  |  |  |
6.200% Notes Due 2040 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  | $ 250.0 | [2] | $ 250.0 | [2] |  |  |  |  |  |  | $ 250.0 |
Stated interest rate (as a percent) |  |  |  |  | 6.20% |  | 6.20% |  |  |  |  |  |  |  | 6.20% |
Premium on early redemptions (as a percent) |  |  |  |  | 0.30% |  |  |  |  |  |  |  |  |  |  |
Repurchase provisions, percentage of principal |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |
6.200% Notes Due 2036 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term and Short-term Debt Instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total borrowings at par value |  |  |  |  | $ 500.0 | [2] | $ 500.0 | [2] |  |  |  |  |  |  |  | $ 500.0
Stated interest rate (as a percent) |  |  |  |  | 6.20% |  | 6.20% |  |  |  |  |  |  |  |  | 6.20%
Premium on early redemptions (as a percent) |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |
[1] | See the Term Loan Facility section below for further discussion of the repayment of the term loan made in 2022.
[2] | The difference between the stated interest rate and the effective interest rate is not significant.

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: 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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: 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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: 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 https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: 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 https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 + Details
Name: | us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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 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(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDebtExtinguishmentCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the maximum number of days to maturity under the commercial paper program. + References No definition available. + Details
Name: | wu_CommercialPaperProgramMaximumDaysToMaturity
Namespace Prefix: | wu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Commercial paper program weighted average initial term. + References No definition available. + Details
Name: | wu_CommercialPaperProgramWeightedAverageInitialTerm
Namespace Prefix: | wu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum EBITDA interest coverage ratio allowed by the Term Loan Facility where the ratio of consolidated adjusted EBITDA is defined as net income plus the sum of (a) interest expense; (b) income tax expense; (c) depreciation expense; (d) amortization expense; (e) any other non-cash deductions, losses or charges made in determining net income for the period; and (f) extraordinary losses or charges, minus extraordinary gains, in each case determined in accordance with U.S. generally accepted accounting principles for such period, to interest expense. + References No definition available. + Details
Name: | wu_EBITDAinterestcoverageratio
Namespace Prefix: | wu_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of principal that the Company may have to repurchase for some or all of the holder's notes, plus any accrued and unpaid interest, if a change of control triggering event occurs with respect to these notes. + References No definition available. + Details
Name: | wu_PercentOfPrincipalUsedToCalculateRepurchaseAmount
Namespace Prefix: | wu_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Incremental amount of basis points added to the applicable Treasury rate to determine the price the Company would pay should they redeem the notes at any time prior to maturity. + References No definition available. + Details
Name: | wu_PremiumOnEarlyRedemptionOfDebt
Namespace Prefix: | wu_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Credit Facility, interest rate margin + References No definition available. + Details
Name: | wu_RevolvingCreditFacilityInterestRateMargin
Namespace Prefix: | wu_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition [Line Items] for Schedule of Long-term and Short-term Debt Instruments [Table] + References No definition available. + Details
Name: | wu_ScheduleofLongtermandShorttermDebtInstrumentsLineItems
Namespace Prefix: | wu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Short-term Debt, Threshold, Excess Borrowings under Revolving Credit Facility Will Reduce Amount Available for Issuance + References No definition available. + Details
Name: | wu_ShorttermDebtThresholdExcessBorrowingsunderRevolvingCreditFacilityWillReduceAmountAvailableforIssuance
Namespace Prefix: | wu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_LetterOfCreditSubFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2031Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2040Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wu_NotesPayable2036Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |