Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Oct. 31, 2013	Oct. 31, 2012
Income Taxes [Abstract]
Effective tax rate	32.20%	29.40%
Tax expense related to intercompany dividend	$ 2.1
Unrecognized tax benefits	18.6
Accrued interest and penalties on unrecognized tax benefits	1.2
Statute of limitations period, average, years	5 years
Maximum possible reduction in amount of unrecognized tax benefits	0.9
Unrecognized tax benefits potential expiration period	12 months
Unrecognized tax benefits in dispute with various taxing authorities	$ 0.2

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References+ Details

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

+ References+ Details