Employee Benefit Plans (Components Of Net Periodic Pension Costs) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Jan. 31, 2015
Jan. 31, 2014
Employee Benefit Plans [Abstract]        
Service cost $ 5,134 $ 4,702 $ 10,278 $ 9,385
Interest cost 4,905 4,863 9,684 9,717
Expected return on assets (7,541) (7,656) (14,884) (15,279)
Prior service cost and transition amortization 142 148 291 296
Settlement Cost 3,906   3,906  
Actuarial loss amortization 1,854 1,850 3,686 3,698
Net periodic benefit cost $ 8,400 $ 3,907 $ 12,961 $ 7,817