Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data	12 Months Ended
	Apr. 30, 2011	Apr. 30, 2010	Apr. 30, 2009
REVENUES:
Service revenues	$ 3,225,861	$ 3,231,487	$ 3,437,906
Product and other revenues	414,282	520,440	491,155
Interest income	134,153	122,405	154,516
Total revenues	3,774,296	3,874,332	4,083,577
OPERATING EXPENSES:
Cost of revenues	2,414,590	2,467,996	2,596,218
Selling, general and administrative	694,136	631,499	648,490
Total operating expenses	3,108,726	3,099,495	3,244,708
Operating income	665,570	774,837	838,869
Other income, net	11,455	9,298	501
Income from continuing operations before income taxes	677,025	784,135	839,370
Income taxes	257,620	295,189	326,315
Net income from continuing operations	419,405	488,946	513,055
Net loss from discontinued operations	(13,295)	(9,704)	(27,382)
NET INCOME	406,110	479,242	485,673
BASIC EARNINGS (LOSS) PER SHARE:
Net income from continuing operations	$ 1.35	$ 1.47	$ 1.53
Net loss from discontinued operations	$ (0.04)	$ (0.03)	$ (0.08)
Net income	$ 1.31	$ 1.44	$ 1.45
DILUTED EARNINGS (LOSS) PER SHARE:
Net income from continuing operations	$ 1.35	$ 1.46	$ 1.53
Net loss from discontinued operations	$ (0.04)	$ (0.03)	$ (0.08)
Net income	$ 1.31	$ 1.43	$ 1.45
COMPREHENSIVE INCOME:
Net income	406,110	479,242	485,673
Unrealized gains (losses) on securities, net of taxes:
Unrealized holding gains (losses) arising during the year, net of taxes of $58, $188 and $(1,736)	73	274	(2,836)
Reclassification adjustment for gains included in income, net of taxes of ($133), $811 and $762	55	(1,399)	(1,164)
Change in foreign currency translation adjustments	9,427	14,442	(10,125)
Comprehensive income	$ 415,665	$ 492,559	$ 471,548