Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Condensed Consolidated Statements Of Cash Flows [Abstract]
Net cash used in operating activities	$ (1,311,926)	$ (1,382,771)
Cash flows from investing activities:
Purchases of AFS securities	(108,351)	(178,014)
Sales, maturities and payments received on available-for-sale securities	86,808	40,473
Principal repayments on mortgage loans held for investment, net	31,205	35,460
Purchases of property and equipment, net	(96,063)	(71,549)
Payments made for acquisitions of businesses and intangibles, net	(20,662)	(16,022)
Proceeds from sales of businesses, net	1,212	533,055
Franchise loans:
Loans funded	(68,874)	(43,649)
Payments received	9,594	8,455
Other, net	(15,185)	15,321
Net cash provided by (used in) investing activities	(180,316)	323,530
Cash flows from financing activities:
Repayments of commercial paper	(789,271)	(413,221)
Proceeds from commercial paper	1,214,238	644,168
Repayments of long-term debt	(636,621)
Proceeds from issuance of long-term debt	497,185
Customer banking deposits, net	208,753	735,252
Dividends paid	(162,692)	(150,058)
Repurchase of common stock, including shares surrendered	(340,298)	(180,566)
Proceeds from exercise of stock options, net	11,529	(324)
Other, net	(36,113)	(31,424)
Net cash provided by (used in) financing activities	(33,290)	603,827
Effects of exchange rates on cash	(417)	(3,446)
Net decrease in cash and cash equivalents	(1,525,949)	(458,860)
Cash and cash equivalents at beginning of the period	1,944,334	1,677,844
Cash and cash equivalents at end of the period	418,385	1,218,984
Supplementary cash flow data:
Income taxes paid, net	104,986	163,471
Interest paid on borrowings	62,160	55,266
Interest paid on deposits	4,377	5,170
Transfers of foreclosed loans to other assets	$ 7,208	$ 6,521