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Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 31, 2021
DFS Services LLC \| DFS Services LLC \| DFS Services LLC
Related Party Transaction [Line Items]
Ownership interest by related party				5.00%
PULSE Network LLC \| Card Network Fees, Net
Related Party Transaction [Line Items]
Expenses from transactions with related parties		$ 30.4	$ 14.4
Connexpay, LLC
Related Party Transaction [Line Items]
Revenue from related parties	$ 2.8
Due to related party	$ 4.1