Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Statement of Cash Flows [Abstract]
NET CASH USED IN OPERATING ACTIVITIES	$ (378,246)	$ (381,585)
CASH FLOWS FROM INVESTING ACTIVITIES:
Maturities of and payments received on available-for-sale securities	32,103	18,484
Principal payments on mortgage loans held for investment, net	8,537	6,250
Purchases of property and equipment	(8,689)	(25,841)
Payments made for business acquisitions, net of cash acquired	(12,271)	(40,533)
Franchise loans:
Loans funded	(2,582)	(7,398)
Payments received	11,434	18,674
Other, net	3,562	4,030
Net cash provided by (used in) investing activities	32,094	(26,334)
CASH FLOWS FROM FINANCING ACTIVITIES:
Customer banking deposits, net	(268,532)	(287,609)
Dividends paid	(55,063)	(54,852)
Payments for repurchase of common stock, including shares surrendered	17,756	9,397
Proceeds from exercise of stock options	13,015	13,368
Other, net	(22,413)	(9,919)
Net cash used in financing activities	(350,749)	(348,409)
Effects of exchange rates on cash	(10,907)	510
Net decrease in cash and cash equivalents	(707,808)	(755,818)
Cash and cash equivalents at beginning of the period	2,007,190	2,185,307
Cash and cash equivalents at end of the period	1,299,382	1,429,489
SUPPLEMENTARY CASH FLOW DATA:
Income taxes paid, net of refunds received	75,358	88,924
Interest paid on borrowings	15,381	15,415
Interest paid on deposits	136	201
Transfers of foreclosed loans to other assets	624	1,818
Accrued additions to property and equipment	$ 5,977	$ 11,988