Stock-Based Compensation (Changes in Nonvested Stock Options) (Details) - Jun. 30, 2015 - $ / shares shares in Thousands	Total	Total
Stock-Based Compensation
Number of Options, beginning balance	1,747	1,679
Weighted-Average Exercise Price Per Share, beginning balance	$ 40.50	$ 34.83
Options granted, Number of options	0	751
Options granted, Weighted-Average Exercise Price Per Share		$ 46.55
Options vested, Number of options	(10)	(661)
Options vested, Weighted-Average Exercise Price Per Share	$ 34.04	$ 33.06
Options forfeited, Number of options	(7)	(39)
Options forfeited, Weighted-Average Exercise Price Per Share	$ 41.11	$ 37.80
Number of Options, ending balance	1,730	1,730
Weighted-Average Exercise Price Per Share, ending balance	$ 40.53	$ 40.53