Derivative Financial Instruments - Narrative (Details) - Designated as Hedging Instrument - Cash Flow Hedging - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Foreign Currency Hedges
Derivative [Line Items]
Losses reported in accumulated other comprehensive income	$ 2.1
Losses to be reclassified within next 12 months	2.1
Derivatives, net gain (loss) reclassified into cost of services	(0.1)	$ 0.1
Notional amount	40.1		$ 52.6
Interest Rate Swap
Derivative [Line Items]
Losses reported in accumulated other comprehensive income	3.3
Losses to be reclassified within next 12 months	1.8
Derivatives, net gain (loss) reclassified into cost of services	0.1	$ 0.0
Notional amount	$ 200.0		$ 100.0