Recent Accounting Pronouncements Impact of Adoption of ASC 606 on Previously Reported Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income			$ 151,640	$ 228,113
Adjustments to reconcile net income to net cash from operating activities:
Depreciation			22,470	24,602
Amortization			56,146	48,711
Change in deferred income taxes			1,256	(87,040)
Expense for stock-based compensation	$ 3,374	$ 3,096	5,146	4,609
(Gain)/ loss on disposal of assets and businesses			(22)	(1,841)
Changes in operating assets and liabilities:
Change in receivables			113,563	143,914
Change in prepaid expenses, deferred costs and other			(45,768)	(57,214)
Change in accounts payable			(14,685)	5,371
Change in accrued expenses			4,658	(13,236)
Change in income taxes			12,654	1,829
Change in deferred revenues			(115,014)	(120,910)
Net cash from operating activities			192,044	176,908
CASH FLOWS FROM INVESTING ACTIVITIES:
Payment for acquisitions, net of cash acquired			(19,981)	(137,654)
Capital expenditures			(32,968)	(12,249)
Proceeds from the sale of businesses			0	350
Proceeds from sale of assets			76	205
Internal use software			(2,694)	(6,025)
Computer software developed			(54,086)	(46,936)
Net cash from investing activities			(109,653)	(202,309)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on credit facilities			0	100,000
Repayments on credit facilities			0	(50,000)
Purchase of treasury stock			(21,276)	(30,018)
Dividends paid			(57,104)	(47,844)
Proceeds from issuance of common stock upon exercise of stock options			1	1
Tax withholding payments related to share based compensation			(13,485)	(7,144)
Proceeds from sale of common stock, net			4,189	3,360
Net cash from financing activities			(87,675)	(31,645)
NET CHANGE IN CASH AND CASH EQUIVALENTS			(5,284)	(57,046)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD			31,440	114,765
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 26,156	57,719	26,156	57,719
Accounting Standards Update 2014-09 [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income				9,128
Adjustments to reconcile net income to net cash from operating activities:
Depreciation				0
Amortization				0
Change in deferred income taxes				(14,319)
Expense for stock-based compensation				0
(Gain)/ loss on disposal of assets and businesses				0
Changes in operating assets and liabilities:
Change in receivables				28,342
Change in prepaid expenses, deferred costs and other				(40,109)
Change in accounts payable				0
Change in accrued expenses				2,150
Change in income taxes				(488)
Change in deferred revenues				15,296
Net cash from operating activities				0
CASH FLOWS FROM INVESTING ACTIVITIES:
Payment for acquisitions, net of cash acquired				0
Capital expenditures				0
Proceeds from the sale of businesses				0
Proceeds from sale of assets				0
Internal use software				0
Computer software developed				0
Net cash from investing activities				0
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on credit facilities				0
Repayments on credit facilities				0
Purchase of treasury stock				0
Dividends paid				0
Proceeds from issuance of common stock upon exercise of stock options				0
Tax withholding payments related to share based compensation				0
Proceeds from sale of common stock, net				0
Net cash from financing activities				0
NET CHANGE IN CASH AND CASH EQUIVALENTS				0
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD			0	0
CASH AND CASH EQUIVALENTS, END OF PERIOD		0		0
Previously Reported [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income				218,985
Adjustments to reconcile net income to net cash from operating activities:
Depreciation				24,602
Amortization				48,711
Change in deferred income taxes				(72,721)
Expense for stock-based compensation				4,609
(Gain)/ loss on disposal of assets and businesses				(1,841)
Changes in operating assets and liabilities:
Change in receivables				115,572
Change in prepaid expenses, deferred costs and other				(17,105)
Change in accounts payable				5,371
Change in accrued expenses				(15,386)
Change in income taxes				2,317
Change in deferred revenues				(136,206)
Net cash from operating activities				176,908
CASH FLOWS FROM INVESTING ACTIVITIES:
Payment for acquisitions, net of cash acquired				(137,654)
Capital expenditures				(12,249)
Proceeds from the sale of businesses				350
Proceeds from sale of assets				205
Internal use software				(6,025)
Computer software developed				(46,936)
Net cash from investing activities				(202,309)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on credit facilities				100,000
Repayments on credit facilities				(50,000)
Purchase of treasury stock				(30,018)
Dividends paid				(47,844)
Proceeds from issuance of common stock upon exercise of stock options				1
Tax withholding payments related to share based compensation				(7,144)
Proceeds from sale of common stock, net				3,360
Net cash from financing activities				(31,645)
NET CHANGE IN CASH AND CASH EQUIVALENTS				(57,046)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD			$ 31,440	114,765
CASH AND CASH EQUIVALENTS, END OF PERIOD		$ 57,719		$ 57,719