Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
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-Topic 350
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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-Publisher FASB
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-SubTopic 20
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Goodwill and Acquired Intangible Assets (Schedule Of Movements of Goodwill by Reportable Segment) (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 19, 2018	Sep. 30, 2019	Sep. 30, 2018
Goodwill [Roll Forward]
Balance, beginning of period		$ 1,182,457	$ 1,182,772
Foreign currency translation adjustments		(10,596)	(4,665)
Balance, end of period		1,238,179	1,182,457
Software Products [Member]
Goodwill [Roll Forward]
Balance, beginning of period		1,152,720	1,152,917
Foreign currency translation adjustments		(10,329)	(4,547)
Balance, end of period		1,196,064	1,152,720
Professional Services [Member]
Goodwill [Roll Forward]
Balance, beginning of period		29,737	29,855
Foreign currency translation adjustments		(267)	(118)
Balance, end of period		42,115	29,737
Other acquisitions [Member]
Goodwill [Roll Forward]
Goodwill acquired		12,645	4,350
Other acquisitions [Member] \| Software Products [Member]
Goodwill [Roll Forward]
Goodwill acquired		0	4,350
Other acquisitions [Member] \| Professional Services [Member]
Goodwill [Roll Forward]
Goodwill acquired		12,645	$ 0
Frustum [Member]
Goodwill [Roll Forward]
Goodwill acquired	$ 53,700	53,673
Frustum [Member] \| Software Products [Member]
Goodwill [Roll Forward]
Goodwill acquired		53,673
Frustum [Member] \| Professional Services [Member]
Goodwill [Roll Forward]
Goodwill acquired		$ 0