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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities |  |  |
Net income | $ 805.8 | $ 744.3 | $ 1,058.3
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 49.6 | 61.3 | 79.6
Amortization | 158.6 | 164.3 | 178.1
Pension settlement charges (Note 12) | 109.8 |  |
Gain on divestiture of businesses, excluding transaction costs (Note 5) |  |  | (532.1)
Gain on sale of noncontrolling interest in a private company (Note 5) | (47.9) |  |
Deferred income tax provision/(benefit) (Note 11) | (2.6) | 13.9 | (24.5)
Other non-cash items, net | 149.6 | 145.8 | 118.4
Increase/(decrease) in cash, excluding the effects of divestitures, resulting from changes in: |  |  |
Other assets | (73.0) | (44.4) | 7.5
Accounts payable and accrued liabilities | (24.8) | (96.6) | 94.3
Income taxes payable (Note 11) | (56.2) | (94.4) | (36.8)
Other liabilities | (23.6) | (16.7) | (28.2)
Net cash provided by operating activities | 1,045.3 | 877.5 | 914.6
Cash flows from investing activities |  |  |
Payments for capitalized contract costs | (107.5) | (69.1) | (46.6)
Payments for internal use software | (69.4) | (51.2) | (33.0)
Purchases of property and equipment | (37.7) | (36.5) | (48.1)
Purchases of settlement investments | (433.0) | (6,421.1) | (5,866.1)
Proceeds from the sale of settlement investments | 755.3 | 5,978.4 | 5,219.1
Maturities of settlement investments | 229.7 | 182.6 | 181.7
Proceeds from the sale of former corporate headquarters and other property (Note 4) |  | 49.4 |
Proceeds from the sale of noncontrolling interest in a private company (Note 4) | 50.9 |  |
Proceeds from divestitures of businesses, net of cash divested (Note 5) |  |  | 711.7
Purchase the noncontrolling interest in stc Bank (Note 5) | (200.0) |  |
Other investing activities | 3.7 | (6.0) | 48.3
Net cash (used in)/provided by investing activities | 192.0 | (373.5) | 167.0
Cash flows from financing activities |  |  |
Cash dividends and dividend equivalents paid | (381.6) | (370.3) | (340.8)
Common stock repurchased (Note 14) | (409.9) | (239.7) | (552.6)
Net proceeds from/(repayments of) commercial paper | 195.0 | (165.0) | 120.0
Net proceeds from issuance of borrowings | 891.7 |  | 495.9
Principal payments on borrowings | (1,150.0) |  | (824.9)
Make-whole premium on early extinguishment of debt (Note 16) | (14.3) |  |
Proceeds from exercise of options | 11.6 | 2.2 | 36.7
Net change in settlement obligations | (412.2) | 587.6 | (414.3)
Other financing activities | 0.2 | (0.7) | (4.1)
Net cash used in financing activities | (1,269.5) | (185.9) | (1,484.1)
Net change in cash and cash equivalents, including settlement, and restricted cash | (32.2) | 318.1 | (402.5)
Cash and cash equivalents, including settlement, and restricted cash at beginning of period | 2,143.1 | 1,825.0 | 2,227.5
Cash and cash equivalents, including settlement, and restricted cash at end of period | 2,110.9 | 2,143.1 | 1,825.0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract] |  |  |
Cash and cash equivalents on balance sheet | 1,208.3 | 1,428.2 | 1,450.5
Settlement cash and cash equivalents (Note 8) | 835.5 | 695.7 | 368.2
Restricted cash in Other assets | 29.4 | 19.2 | 6.3
Cash and cash equivalents included in Assets held for sale (Note 5) | 37.7 |  |
Cash and cash equivalents, including settlement, and restricted cash | 2,110.9 | 2,143.1 | 1,825.0
Supplemental cash flow information: |  |  |
Interest paid | 101.6 | 109.6 | 151.3
Income taxes paid | 185.9 | 187.3 | 318.9
Cash paid for lease liabilities | 46.5 | 65.9 | 53.8
Non-cash lease liabilities arising from obtaining right-of-use assets (Note 13) | 18.5 | 38.6 | 269.1
Internal use software capitalized but not yet paid | $ 26.4 | $ 0.2 | $ 1.6

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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes transaction costs. + References No definition available. + Details
Name: | wu_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalExcludingTransactionCosts
Namespace Prefix: | wu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net change in settlement obligations. + References No definition available. + Details
Name: | wu_NetChangeInSettlementObligations
Namespace Prefix: | wu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the portion of total settlement assets comprised of cash and cash equivalents. + References No definition available. + Details
Name: | wu_SettlementAssetsCashAndCashEquivalents
Namespace Prefix: | wu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant