Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Statement of Cash Flows [Abstract]
NET CASH USED IN OPERATING ACTIVITIES	$ (492,373)	$ (567,036)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of available-for-sale securities	(45,158)	(67,474)
Maturities of and payments received on available-for-sale securities	55,615	53,098
Principal payments on mortgage loans held for investment, net	24,340	23,608
Purchases of property and equipment	(86,926)	(60,720)
Payments to Acquire Businesses, Net of Cash Acquired	20,927	10,442
Franchise loans:
Loans funded	(22,114)	(20,670)
Payments received	15,883	8,303
Other, net	15,255	10,218
Net cash provided by (used in) investing activities	(64,032)	(64,079)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of Long-term Debt	0	(30,831)
Proceeds from Issuance of Long-term Debt	0	497,185
Customer banking deposits, net	(275,800)	(37,913)
Dividends paid	(109,324)	(108,428)
Repurchase of common stock, including shares surrendered	(5,329)	(339,919)
Proceeds from exercise of stock options	24,536	1,288
Other, net	(26,619)	(33,004)
Net cash used in financing activities	(392,536)	(51,622)
Effects of exchange rates on cash	(7,871)	(696)
Net decrease in cash and cash equivalents	(956,812)	(683,433)
Cash and cash equivalents at beginning of the period	1,747,584	1,944,334
Cash and cash equivalents at end of the period	790,772	1,260,901
SUPPLEMENTARY CASH FLOW DATA:
Income taxes paid, net of refunds received	116,099	48,201
Interest paid on borrowings	27,804	42,106
Interest paid on deposits	1,180	2,683
Transfers of foreclosed loans to other assets	3,889	5,312
Accrued additions to property and equipment	6,729	10,273
Transfer of mortgage loans held for investment to held for sale	$ 7,608	$ 0