CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Revenue	$ 1,727,037	$ 1,822,440	$ 1,775,195
Costs and Expenses
Cost of sales	465,917	499,683	506,879
Operating and administrative expenses	994,632	1,005,000	969,456
Restructuring charges	28,611	28,804	42,722
Impairment charges	0	0	4,786
Amortization of intangibles	49,764	51,214	44,679
Total Costs and Expenses	1,538,924	1,584,701	1,568,522
Operating Income	188,113	237,739	206,673
Interest expense	(16,707)	(17,077)	(13,916)
Foreign exchange transaction gains (losses)	473	1,742	(8)
Interest income and other	2,914	3,057	2,785
Income Before Taxes	174,793	225,461	195,534
Provision for Income Taxes	29,011	48,593	35,024
Net Income	$ 145,782	$ 176,868	$ 160,510
Earnings Per Share
Diluted (in dollars per share)	$ 2.48	$ 2.97	$ 2.70
Basic (in dollars per share)	$ 2.51	$ 3.01	$ 2.73
Average Shares
Diluted (in shares)	58,734	59,594	59,514
Basic (in shares)	57,998	58,733	58,635
Class A [Member]
Cash Dividends Per Share
Common stock (in dollars per share)	$ 1.20	$ 1.16	$ 1.00
Class B [Member]
Cash Dividends Per Share
Common stock (in dollars per share)	$ 1.20	$ 1.16	$ 1.00