Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	1 Months Ended	12 Months Ended
	Jan. 27, 2012	Jun. 30, 2011	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Property, Plant and Equipment [Line Items]
Number of manufacturing plants around world			40
Number of joint ventures			3
Foreign currency translation adjustment			$ 1.8	$ (4.5)	$ (4.6)
Number of days considered to review for collectability			90 days
Inventories valuation, LIFO method to total inventory, in percentage			30.00%	33.00%
Excess of FIFO inventory cost over LIFO inventory carrying values			37.4	37.1
Depreciation expense			55.3	54.5	53.2
Capitalization of direct cost, amortization period in years			5 years
Options excluded from the diluted net earnings per share calculation			1,063,135	988,698	1,691,654
Stock dividend	100.00%
Shipping and handling costs			$ 67.0	$ 61.9	$ 49.8
Separate consecutive statements		2
Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, years			20 years
Maximum [Member] | Land And Building [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, years			40 years
Maximum [Member] | Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, years			10 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, years			3 years
Minimum [Member] | Land And Building [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, years			10 years
Minimum [Member] | Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, years			3 years