Shareholders' Equity (Schedule Of Share Repurchases) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended		6 Months Ended
	May 01, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stockholders' Equity Note [Abstract]
Stock Repurchase Program, Authorized Amount	$ 500,000
Shares repurchased, shares		1,949,496	1,524,984	3,961,692	2,821,335
Cost of shares repurchased		$ 70,874	$ 46,326	$ 139,532	$ 82,571
Shares repurchased, average price per share		$ 36.36	$ 30.38	$ 35.22	$ 29.27
Treasury shares held for issuance pursuant to equity-based compensation plans	3,000,000