Summary Of Significant Accounting Policies (Details) (USD $)	12 Months Ended			1 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2015	Aug. 31, 2012
Summary Of Significant Accounting Policies [Line Items]
Book overdrafts included in accounts payable	$ 34,000,000	$ 38,300,000		34,000,000
Maximum funding by facility					1,500,000,000
Period at which loans are classified as non-accrual (in days)	90 days
Weighted-average life of intangible assets with finite lives (in years)	21 years
Refundable deposit from franchisees	2,500
Contributions of continuing operations to 401(k) defined contribution plans	14,800,000	11,800,000	11,300,000
Expenses related to severance benefits	6,700,000	5,200,000	4,800,000
Foreign currency losses	5,900,000	18,200,000
Foreign currency gains			200,000
Document Fiscal Year Focus	2015
Buildings
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	15 years
Computers and other equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life				3 years
Purchased software
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	3 years
Leasehold improvements
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	8 years
Minimum
Summary Of Significant Accounting Policies [Line Items]
Mortgage loan's past due, in days	60 days
Minimum | Software Development
Summary Of Significant Accounting Policies [Line Items]
Weighted-average life of intangible assets with finite lives (in years)	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Mortgage loan's past due, in days	180 days
Maximum | Software Development
Summary Of Significant Accounting Policies [Line Items]
Weighted-average life of intangible assets with finite lives (in years)	5 years
Maximum | Buildings
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life	40 years
Maximum | Computers and other equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life				5 years
Emerald Advance lines of credit
Summary Of Significant Accounting Policies [Line Items]
Maximum funding by facility	$ 1,000			1,000