Employee Benefit Plans (Changes In Fair Value Of U.S. Pension Plans' Level 3 Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Unrealized gains	$ (179.6)	$ (135.4)
Realized gains	(44.3)	8.1	$ (7.2)
Fair Value, Inputs, Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	87.2	93.3	102.3
Unrealized gains	(6.2)	(3.3)	(0.3)
Realized gains	3.7	8.5	12.1
Purchases	0.7	2.6	24.7
Sales	(13.1)	(13.9)	(45.5)
Ending balance	72.3	87.2	93.3
Equity Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	19.5	21.1	19.4
Unrealized gains	(1.3)	(0.3)	1.7
Realized gains	2.5	2.8	2.4
Purchases	0.6	1.8	2.0
Sales	(4.2)	(5.9)	(4.4)
Ending balance	17.1	19.5	21.1
Fixed Income Securities | Fair Value, Inputs, Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	54.7	58.7	60.8
Unrealized gains	(2.5)	(3.7)	(2.0)
Realized gains	0.8	5.1	8.9
Purchases	0.0	0.0	20.0
Sales	(5.7)	(5.4)	(29.0)
Ending balance	47.3	54.7	58.7
Real Estate | Fair Value, Inputs, Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	13.0	13.5	22.1
Unrealized gains	(2.4)	0.7	0.0
Realized gains	0.4	0.6	0.8
Purchases	0.1	0.8	2.7
Sales	(3.2)	(2.6)	(12.1)
Ending balance	$ 7.9	$ 13.0	$ 13.5