Share-Based Payments (Summary Of Stock Option Activity) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, Beginning of year, shares | shares	128
Granted, shares | shares	0
Exercised, shares | shares	(49)
Cancelled, expired or forfeited, shares | shares	(24)
Outstanding, Ending balance, shares | shares	55
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding, Beginning of year, weighted average exercise price | $ / shares	$ 52.59
Granted, weighted average exercise price | $ / shares	0.00
Exercised, weighted average exercise price | $ / shares	52.10
Cancelled, expired or forfeited, weighted average exercise price | $ / shares	53.99
Outstanding, Ending balance, weighted average exercise price | $ / shares	$ 52.40