Employee Benefit Plans (Components Of Net Periodic Pension Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Service cost	$ 4.6	$ 5.1
Interest cost	4.8	4.8
Expected return on assets	(7.3)	(7.3)
Prior service cost and transition amortization	0.1	0.1
Actuarial loss amortization	2.1	1.8
Net periodic benefit cost	$ 4.3	$ 4.5