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Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	$ 141.8	$ 180.5	$ 341.2	$ 335.5
Over-time Revenue
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	134.7	170.2	323.5	313.8
Point-in-time Revenue
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	7.1	10.3	17.7	21.7
Payments-based Revenue
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	121.2	159.5	297.6	293.5
Subscription-based Revenue
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	17.5	16.3	35.1	32.7
Other Revenue
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	$ 3.1	$ 4.7	$ 8.5	$ 9.3

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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