Comprehensive Income (Tax Amounts Allocated to Components of Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	May 31, 2014		May 31, 2013		May 31, 2014		May 31, 2013
Other Comprehensive Income/(Expense) Items:
Foreign Currency Translation Adjustments	$ 1.8		$ (0.6)		$ 2.8		$ 0.1
Prior service cost from plan amendment					0		(5.5)
Prior service cost	0.2	[1]	0.2	[1]	0.6	[1]	0.5	[1]
Actuarial losses	0.8	[1]	1.6	[1]	2.3	[1]	4.7	[1]
Total Defined Benefit Pension Plans, net	1.0		1.8		2.9		(0.3)
Other Comprehensive Income/(Expense) Items before Provision for Income Taxes	2.8		1.2		5.7		(0.2)
Tax (Expense) or Benefit
Foreign Currency Translation Adjustments	0		0		0		0
Prior service cost from plan amendment					0		2.2
Prior service cost	(0.1)		(0.1)		(0.2)		(0.1)
Actuarial losses	(0.2)		(0.5)		(0.8)		(1.6)
Defined Benefit Pension Plans, net	(0.3)		(0.6)		(1.0)		0.5
Other Comprehensive Income	(0.3)		(0.6)		(1.0)		0.5
Other Comprehensive Income/(Expense) Items:
Foreign Currency Translation Adjustments	1.8		(0.6)		2.8		0.1
Prior service cost from plan amendment					0		(3.3)
Prior service cost	0.1		0.1		0.4		0.4
Actuarial losses	0.6		1.1		1.5		3.1
Defined Benefit Pension Plans, net	0.7		1.2		1.9		0.2
Other Comprehensive Income/(Expense), net of tax	$ 2.5		$ 0.6		$ 4.7		$ 0.3

[1] These accumulated other comprehensive income components are included in net periodic pension cost. See Pension and Profit Sharing Plans footnote within the Notes to Consolidated Financial Statements for additional details.