Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated net income	$ 152.0	$ 183.0	$ 136.9
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	11.5	(26.6)	33.4
Unrealized gains (losses) on securities:
Unrealized holding gains (losses) arising during period	3.8	(1.0)	3.4
Reclassification of gains included in net income	(0.9)	(0.8)	(1.9)
Other comprehensive income (loss)	14.4	(28.4)	34.9
Comprehensive income	$ 166.4	$ 154.6	$ 171.8