Employee Benefit Plans (Components Of Net Periodic Pension Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Service cost	$ 18.4	$ 20.4	$ 18.8
Interest cost	18.9	19.1	19.5
Expected return on assets	(28.8)	(29.5)	(30.8)
Prior service cost and transition amortization	0.8	0.6	0.6
Actuarial loss amortization	8.5	7.1	7.4
Settlement loss	0.0	(3.9)	0.0
Net periodic benefit cost	17.8	21.6	15.5
Other changes recognized in other comprehensive income
Net actuarial loss	53.6	3.5	15.2
Amortization of asset obligations	(0.4)	(0.2)	(0.2)
Amortization of prior service cost	(0.4)	(0.4)	(0.4)
Amortization of net actuarial loss	(8.5)	(11.0)	(7.4)
Total recognized in other comprehensive income	44.3	(8.1)	7.2
Total recognized in net periodic benefit costs and other comprehensive income	$ 62.1	$ 13.5	$ 22.7