Comprehensive Income (Tax Amounts Allocated to Components of Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Feb. 28, 2014		Feb. 28, 2013		Feb. 28, 2014		Feb. 28, 2013
Other Comprehensive Income/(Expense) Items:
Foreign Currency Translation Adjustments	$ (1.3)		$ (0.6)		$ 1.0		$ 0.7
Prior service cost from plan amendment					0		(5.5)
Prior service cost	0.2	[1]	0.1	[1]	0.4	[1]	0.3	[1]
Actuarial losses	0.8	[1]	1.6	[1]	1.5	[1]	3.2	[1]
Total Defined Benefit Pension Plans, net	1.0		1.7		1.9		(2.0)
Other Comprehensive Income/(Expense) Items before Provision for Income Taxes	(0.3)		1.1		2.9		(1.3)
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		(0.1)		(0.1)
Actuarial losses	(0.3)		(0.6)		(0.6)		(1.1)
Defined Benefit Pension Plans, net	(0.4)		(0.6)		(0.7)		1.0
Other Comprehensive Income	(0.4)		(0.6)		(0.7)		1.0
Other Comprehensive Income/(Expense) Items:
Foreign Currency Translation Adjustments	(1.3)		(0.6)		1.0		0.7
Prior service cost from plan amendment					0		(3.3)
Prior service cost	0.1		0.1		0.3		0.2
Actuarial losses	0.5		1.0		0.9		2.1
Defined Benefit Pension Plans, net	0.6		1.1		1.2		(1.0)
Other Comprehensive Income/(Expense), net of tax	$ (0.7)		$ 0.5		$ 2.2		$ (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.