Related Party Transactions (Details) - $ / shares	Jun. 30, 2021	Jan. 25, 2021	Dec. 31, 2020	Dec. 15, 2020
Catalyst Holdings
Related Party Transaction [Line Items]
Amount to be paid per share (in dollars per share)				$ 35.00
NCR | Forecast | Subsequent Event
Related Party Transaction [Line Items]
Amount to be paid per share (in dollars per share)	$ 39.00	$ 39.00
Cardtronics plc | Hudson Executive Capital
Related Party Transaction [Line Items]
Ownership percentage			19.40%