Consolidated Statements Of Income And Comprehensive Income (Parenthetical) $ in Thousands	12 Months Ended
	Apr. 30, 2021 USD ($) $ / shares
Income Statement [Abstract]
Revenues	$ 3,413,987
Costs of revenues	1,842,092
Selling, General and Administrative Expense	802,268
Operating expenses	2,644,360
Other income (expense), net	5,979
Interest Expense, Debt	(106,870)
Income (loss) from continuing operations before income taxes (benefit)	668,736
Income taxes	78,524
Discontinued Operation, Tax Effect of Discontinued Operation	3,883
Net loss from discontinued operations, net of tax benefits of $2,423, $2,093, $451 and $3,883	$ (6,421)
Basic (in usd per share) | $ / shares	$ 3.15
Discontinued operations (in usd per share) | $ / shares	(0.04)
Earnings Per Share, Basic | $ / shares	3.11
Diluted (in usd per share) | $ / shares	3.11
Discontinued operations (in usd per share) | $ / shares	(0.03)
Earnings Per Share, Diluted | $ / shares	$ 3.08
Net income	$ 583,791
Change in foreign currency translation adjustments	56,362
Other Comprehensive Income (Loss), Net of Tax	56,362
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	640,153
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 590,212