Segment Information (Summary Of Segment Financial Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011
Segment Reporting Information [Line Items]
Total revenues	$ 328,609	[1],[2],[3],[4],[5]	$ 315,105	[1],[2],[3],[4],[5]	$ 324,520	[1],[2],[3],[4],[5]	$ 299,851	[1],[2],[3],[4],[5]	$ 302,526	[1],[2],[3],[4],[5]	$ 278,044	[1],[2],[3],[4],[5]	$ 270,403	[1],[2],[3],[4],[5]	$ 256,558	[1],[2],[3],[4],[5]	$ 1,268,085	[6]	$ 1,107,531	[6]	$ 1,007,859	[6]
Total income tax before taxes																	233,805	[6]	237,191	[6]	209,612	[6]
Total capital expenditures																	23,282	[7]	17,468	[7]	10,706	[7]
Total depreciation and amortization																	22,573	[7]	16,177	[7]	16,790	[7]
Total identifiable assets	1,589,038	[7]							1,566,020	[7]							1,589,038	[7]	1,566,020	[7]
Total goodwill	432,950	[7]							444,117	[7]							432,950	[7]	444,117	[7]	242,319
U.S./Canada [Member]
Segment Reporting Information [Line Items]
Total revenues																	546,878	[6]	565,731	[6]	541,272	[6]
Total income tax before taxes																	128,232	[6]	136,485	[6]	130,254	[6]
Total capital expenditures																	12,750	[7]	7,628	[7]	5,333	[7]
Total depreciation and amortization																	9,877	[7]	10,104	[7]	11,129	[7]
Total identifiable assets	664,607	[7]							724,902	[7]							664,607	[7]	724,902	[7]
Total goodwill	167,217	[7]							167,304	[7]							167,217	[7]	167,304	[7]	162,720
International [Member]
Segment Reporting Information [Line Items]
Total revenues																	772,084	[6]	589,850	[6]	511,883	[6]
Total income tax before taxes																	142,785	[6]	136,355	[6]	112,043	[6]
Total capital expenditures																	10,532	[7]	9,840	[7]	5,373	[7]
Total depreciation and amortization																	12,696	[7]	6,073	[7]	5,661	[7]
Total identifiable assets	924,431	[7]							841,118	[7]							924,431	[7]	841,118	[7]
Total goodwill	265,733	[7]							276,813	[7]							265,733	[7]	276,813	[7]	79,599
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenues																	(50,877)	[6],[8]	(48,050)	[6],[8]	(45,296)	[6],[8]
Total income tax before taxes																	$ (37,212)	[6],[8]	$ (35,649)	[6],[8]	$ (32,685)	[6],[8]

[1] Fiscal years ended June 30, 2013 and 2012 include approximately $21.1 million ($14.4 million, net of tax, or $0.18 per diluted share) and $16.5 million ($11.3 million, net of tax, or $0.14 per diluted share), respectively, in non-cash share-based compensation expenses. See Note 3 "Share-based Compensation." Fiscal years 2013 and 2012 also include other-than-temporary impairment losses of approximately $0.6 million and $4.0 million, respectively, for auction rate securities. Fiscal year 2013 also include gain of approximately $4.1 million from sales of auction rate securities. See Note 2 "Financial Instruments and Fair Value Measurements."

[2] Fiscal years 2013 and 2012 include approximately $4.1 million and $0.5 million, respectively, in gains from sales of our investments in auction rate securities.

[3] Fiscal year 2013 includes a $2.0 million in an insurance settlement related to a fraud that occurred in Japan during fiscal year 2010.

[4] The sum of quarterly amounts does not equal the sum of as reported amounts for the respective fiscal years due to rounding differences.

[5] The results include activities from the acquisition of Torex which occurred on May 31, 2012

[6] Amounts based on the location of the selling entity.

[7] Amounts based on the physical location of the asset.

[8] Amounts primarily represent elimination of U.S./Canada and Ireland's intercompany business.