Shareholders' Equity (Summary of Share Activity) (Details)	9 Months Ended
	Sep. 30, 2013
Rollforward of Share Activity, Common and Treasury Shares
Common shares outstanding, beginning balance	76,448,000
Shares issued for stock option exercises	498,123
Shares issued for restricted stock awards	64,288
Other shares issued, net	409,000
Common shares outstanding, ending balance	77,219,000
Treasury shares, beginning balance	9,467,286
Treasury shares, ending balance	9,467,286
Investor [Member] | Common Stock Outstanding [Member]
Rollforward of Share Activity, Common and Treasury Shares
Shares contributed by shareholder, former owner of acquired business	(200,000)	[1]

[1] See Note 12 - Stock-Based Compensation and Other Employee Benefit Plans for contributed share details.