Consolidated Statement of Shareholders' Equity (USD $) In Millions, except Share data, unless otherwise specified		Common Stock	Additional Paid-In Capital	Deferred Compensation Plan	Accumulated Other Comprehensive Income	Retained Earnings	Shares in Treasury	Total
Balance at Dec. 31, 2013		$ 78.7	$ 201.1	$ 3.0	$ (31.5)	$ 1,944.3	$ (209.5)	$ 1,986.1
Balance (in shares) at Dec. 31, 2013		63,658,777					14,761,481
Increase (Decrease) in Shareholders' Equity
Net income						251.3		251.3
Other comprehensive income, net of tax					(30.3)			(30.3)
Cash dividends - $0.94, $0.25 per share for the year ended 2014, and March 2015 respectively						(61.2)		(61.2)
Stock based compensation other	[1]		46.7	3.0			9.4	59.1
Stock based compensation other (in shares)	[1]	1,032,282					(1,038,280)
Balance at Dec. 31, 2014		78.7	247.8	6.0	(61.8)	2,134.4	(200.1)	2,205.0
Balance (in shares) at Dec. 31, 2014		64,691,059					13,723,201	64,691,059
Increase (Decrease) in Shareholders' Equity
Net income						39.4		39.4
Other comprehensive income, net of tax					(20.0)			(20.0)
Cash dividends - $0.94, $0.25 per share for the year ended 2014, and March 2015 respectively						(16.7)		(16.7)
Common stock repurchase							(8.8)	(8.8)
Common stock repurchase (Shares)							95,200
Stock based compensation other	[1]		11.1	2.4			0.5	14.0
Stock based compensation other (in shares)	[1]	201,087					(276,896)
Balance at Mar. 31, 2015		$ 78.7	$ 258.9	$ 8.4	$ (81.8)	$ 2,157.1	$ (208.4)	$ 2,212.9
Balance (in shares) at Mar. 31, 2015		64,892,146					13,541,505	64,892,146

[1] Stock based compensation includes stock option activity, net of tax, and restricted share activity