Employee Benefits - Defined Benefit Plan Disclosures (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amortization of Gain (Loss), Percent Threshold	5.00%
Defined Benefit Plan, Benefit Obligation	$ 13	$ 14
Defined Benefit Plan, Funded Status of Plan	$ 2	$ 4
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.10%	4.05%
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 15	$ 18
Supplemental Employee Retirement Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits	3	3
Defined Benefit Plan, Benefit Obligation and Unfunded Status	4	$ 4
Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Annual Expected Future Benefit Payments	1
Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Annual Expected Future Benefit Payments	$ 3