Litigation And Related Contingencies (Details) (USD $) In Millions	3 Months Ended
	Jul. 31, 2011	Oct. 31, 2010 2SS Holdings, Inc. [Member]	Jul. 31, 2011 Minimum [Member] California Wage And Hour Class Action Lawsuit [Member]	Jul. 31, 2011 Maximum [Member] California Wage And Hour Class Action Lawsuit [Member]	Jul. 31, 2011 Investigations, Legal Claims And Lawsuits [Member]	Apr. 30, 2011 Investigations, Legal Claims And Lawsuits [Member]	Jul. 31, 2011 RSM McGladrey Litigation [Member]	Jul. 31, 2011 Pending Or Threatened Litigation [Member]
Cash paid for acquisition		$ 287.5
Liability for legal claims			0	70.0	86.3	70.6	41.5
Claim for severance benefits	8
Initial principal on loans securitized								50
Principal outstanding on loans securitized								42
Cash payment for settlement from SCC to the Attorney General	9.8
Estimated benefits from loan modification relief	115
Contingent cash payment	$ 5