Consolidated Statements Of Income And Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2017
REVENUES:
Revenues	$ 3,094,881	$ 3,159,931	$ 3,036,314
OPERATING EXPENSES:
Costs of revenues	1,756,922	1,739,729	1,644,377
Selling, general and administrative	722,167	668,152	675,953
Total operating expenses	2,479,089	2,407,881	2,320,330
Other income (expense), net	16,419	6,054	6,254
Interest expense on borrowings	(87,051)	(89,372)	(92,951)
Income from continuing operations before income taxes	545,160	668,732	629,287
Income taxes	99,904	41,823	208,370
Net income from continuing operations	445,256	626,909	420,917
Net loss from discontinued operations, net of tax benefits of $6,788, $7,016 and $6,986	(22,747)	(13,760)	(11,972)
Net income	$ 422,509	$ 613,149	$ 408,945
BASIC EARNINGS (LOSS) PER SHARE:
Continuing operations (in usd per share)	$ 2.16	$ 2.99	$ 1.97
Discontinued operations (in usd per share)	(0.11)	(0.06)	(0.05)
Consolidated (in usd per share)	2.05	2.93	1.92
DILUTED EARNINGS (LOSS) PER SHARE:
Continuing operations (in usd per share)	2.15	2.98	1.96
Discontinued operations (in usd per share)	(0.11)	(0.07)	(0.05)
Consolidated (in usd per share)	$ 2.04	$ 2.91	$ 1.91
COMPREHENSIVE INCOME:
Net income	$ 422,509	$ 613,149	$ 408,945
Unrealized gains (losses) on securities, net of taxes	0	1	(16)
Change in foreign currency translation adjustments	(6,113)	995	(4,050)
Other comprehensive income (loss)	(6,113)	996	(4,066)
Comprehensive income	416,396	614,145	404,879
Service revenues
REVENUES:
Revenues	2,691,727	2,766,426	2,648,349
Royalty, product and other revenues
REVENUES:
Revenues	$ 403,154	$ 393,505	$ 387,965