Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2019	Apr. 30, 2018
ASSETS
Cash and cash equivalents	$ 1,572,150	$ 1,544,944
Cash and cash equivalents - restricted	135,577	118,734
Receivables, less allowance for doubtful accounts of $67,228 and $81,813	138,965	146,774
Prepaid expenses and other current assets	146,667	81,261
Total current assets	1,993,359	1,891,713
Property and equipment, at cost, less accumulated depreciation and amortization of $745,761 and $745,397	212,092	231,888
Intangible assets, net	342,493	373,981
Goodwill	519,937	507,871
Deferred tax assets and income taxes receivable	141,979	34,095
Other noncurrent assets	90,085	101,401
Total assets	3,299,945	3,140,949
LIABILITIES:
Accounts payable and accrued expenses	249,525	251,975
Accrued salaries, wages and payroll taxes	196,527	141,499
Accrued income taxes and reserves for uncertain tax positions	271,973	263,050
Current portion of long-term debt		1,026
Deferred revenue and other current liabilities	204,976	186,101
Total current liabilities	923,001	843,651
Long-term debt	1,492,629	1,494,609
Deferred tax liabilities and reserves for uncertain tax positions	197,906	229,430
Deferred revenue and other noncurrent liabilities	144,882	179,548
Total liabilities	2,758,418	2,747,238
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Common stock, no par, stated value $.01 per share, 800,000,000 shares authorized, shares issued of 238,336,760 and 246,198,878	2,383	2,462
Additional paid-in capital	767,636	760,250
Accumulated other comprehensive loss	(20,416)	(14,303)
Retained earnings	499,386	362,980
Less treasury shares, at cost, of 36,377,441 and 36,944,789	(707,462)	(717,678)
Total stockholders' equity	541,527	393,711
Total liabilities and stockholders' equity	$ 3,299,945	$ 3,140,949