SETTLEMENT ASSETS AND OBLIGATIONS - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | |||
| Merchant reserves held by sponsor banks | $ 103.8 | $ 79.8 | |
| Provision for merchant losses | $ 4.1 | $ 3.1 | $ 3.1 |
| X | ||||||||||
- Definition Merchant Reserves Held By Sponsor Banks No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of expense related to credit loss from transactions other than loan and lease transactions. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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