Unaudited Condensed Consolidated Statements Of Shareholders' Equity - USD ($) $ in Millions	Total	Share capital	Treasury shares	Accumulated other comprehensive loss	Retained earnings
Balance, at beginning of period at Dec. 31, 2015		$ 386.7	$ (155.1)	$ (9.3)	$ 3,310.2
Stock compensation			8.8		(9.7)
Share repurchased			(50.0)
Shares canceled		(11.6)	50.0		(38.4)
Foreign currency translation adjustment	$ 3.1			3.1
Net income	74.1				74.1
Dividends					(23.4)
Balance, at end of period at Mar. 31, 2016	3,535.4	375.1	(146.3)	(6.2)	3,312.8
Balance, at beginning of period at Dec. 31, 2016	3,551.8	378.8	(233.8)	(11.6)	3,418.4
Stock compensation			10.2		(9.7)
Share repurchased			0.0
Shares canceled		0.0	0.0		0.0
Foreign currency translation adjustment	5.7			5.7
Net income	80.3				80.3
Dividends					0.0
Balance, at end of period at Mar. 31, 2017	$ 3,638.3	$ 378.8	$ (223.6)	$ (5.9)	$ 3,489.0