Basis of Presentation and Summary of Significant Accounting Polices - Property and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Depreciation expense for property and equipment	$ 131.3	$ 129.1	$ 124.3
New ATMs
Property, Plant and Equipment [Abstract]
Property and equipment useful life	8 years
ATMs
Property, Plant and Equipment [Abstract]
Property and equipment useful life	5 years
Minimum
Property, Plant and Equipment [Abstract]
Property and equipment useful life	3 years
Minimum | Other Capitalized Property Plant and Equipment
Property, Plant and Equipment [Abstract]
Property and equipment useful life	3 years
Maximum
Property, Plant and Equipment [Abstract]
Property and equipment useful life	10 years
Maximum | Other Capitalized Property Plant and Equipment
Property, Plant and Equipment [Abstract]
Property and equipment useful life	9 years