Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Statement of Cash Flows [Abstract]
NET CASH USED IN OPERATING ACTIVITIES	$ (318,742)	$ (373,140)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of available-for-sale securities	(45,158)	(28,990)
Maturities of and payments received on available-for-sale securities	32,061	21,129
Principal payments on mortgage loans held for investment, net	11,707	12,652
Purchases of property and equipment	(34,386)	(13,273)
Franchise loans:
Loans funded	(6,657)	(5,062)
Payments received	7,164	5,154
Other, net	6,179	1,675
Net cash provided by (used in) investing activities	(29,090)	(6,715)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of Long-term Debt	0	(30,831)
Customer banking deposits, net	(179,364)	(179,519)
Dividends paid	(54,550)	(54,201)
Repurchase of common stock, including shares surrendered	(4,201)	(339,088)
Proceeds from exercise of stock options	21,953	468
Other, net	(13,093)	(19,939)
Net cash used in financing activities	(229,255)	(623,110)
Effects of exchange rates on cash	(6,621)	(1,498)
Net decrease in cash and cash equivalents	(583,708)	(1,004,463)
Cash and cash equivalents at beginning of the period	1,747,584	1,944,334
Cash and cash equivalents at end of the period	1,163,876	939,871
SUPPLEMENTARY CASH FLOW DATA:
Income taxes paid, net of refunds received	106,467	19,747
Interest paid on borrowings	15,883	13,494
Interest paid on deposits	640	1,336
Transfers of foreclosed loans to other assets	2,100	3,074
Accrued additions to property and equipment	8,048	7,107
Transfer of mortgage loans held for investment to held for sale	$ 7,608	$ 0