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Acquired Intangible Assets - Calculation Of Acquired Intangibles By Asset Class (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2018	Jun. 30, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 2,286,960	$ 2,333,736
Accumulated Amortization	(1,083,676)	(1,037,099)
Total	1,203,284	1,296,637
Technology assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	985,226	985,226
Accumulated Amortization	(487,251)	(439,774)
Total	$ 497,975	545,452
Weighted-average amortization period (in years) for acquired intangible assets	6 years
Customer assets
Finite-Lived Intangible Assets, Net [Abstract]
Cost	$ 1,301,734	1,348,510
Accumulated Amortization	(596,425)	(597,325)
Total	705,309	$ 751,185
Intangible assets fully amortized during the period	$ 46,800
Weighted-average amortization period (in years) for acquired intangible assets	8 years

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Finite-Lived Intangible Assets, Fully Amortized During the Period

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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