Goodwill and Intangible Assets (Schedule Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jun. 30, 2012	Sep. 30, 2011
Goodwill [Roll Forward]
Balance, September 30, 2011		$ 613,394
Foreign currency translation adjustments	(6,612)
Balance, June 31, 2012	606,782	613,394
Software Products Segment [Member]
Goodwill [Roll Forward]
Balance, September 30, 2011		588,443
Foreign currency translation adjustments	(6,511)
Balance, June 31, 2012	581,932	588,443
Services Segment [Member]
Goodwill [Roll Forward]
Balance, September 30, 2011		24,951
Foreign currency translation adjustments	(101)
Balance, June 31, 2012	$ 24,850	$ 24,951

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ Details