Share-Based Compensation (Summary Of Stock Award Activity) (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Number of Shares
Number of Shares, December 31, 2014	2,362
Granted, Number of Shares	561
Cancelled, Number of Shares	(70)
Exercised, Number of Shares	(282)
Number of Shares, September 30, 2015	2,571
Weighted Average Exercise Price
Weighted Average price, December 31, 2014 (in dollars per share) | $ / shares	$ 19.45
Granted, Weighted Average price (in dollars per share) | $ / shares	30.30
Cancelled, Weighted Average price (in dollars per share) | $ / shares	26.43
Exercised, Weighted Average price (in dollars per share) | $ / shares	17.68
Weighted Average price, September 30, 2015 (in dollars per share) | $ / shares	$ 21.82