Summary of Segment Information (Detail) - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Segment revenues:
Transactional and maintenance		$ 147,072	$ 131,410
Professional services		34,152	35,198
License		18,852	22,942
Total revenues		200,076	189,550
Segment operating expense		(169,242)	(164,670)
Unallocated share-based compensation expense		(14,700)	(8,794)
Unallocated amortization expense	[1]	(3,580)	(2,932)
Operating income (loss)		30,834	24,880
Unallocated interest expense		(6,724)	(7,205)
Unallocated other income (expense), net		(334)	649
Income before income taxes		23,776	18,324
Depreciation expense		3,861	5,175
Operating Segments
Segment revenues:
Segment operating expense		(150,962)	(152,944)
Operating income (loss)		49,114	36,606
Unallocated Corporate Expenses
Segment revenues:
Segment operating expense		(24,062)	(21,619)
Operating income (loss)		(24,062)	(21,619)
Depreciation expense		305	667
Applications | Operating Segments
Segment revenues:
Transactional and maintenance		80,983	78,551
Professional services		27,126	28,499
License		12,032	8,448
Total revenues		120,141	115,498
Segment operating expense		(87,437)	(88,894)
Operating income (loss)		32,704	26,604
Depreciation expense		2,744	3,508
Scores | Operating Segments
Segment revenues:
Transactional and maintenance		55,217	42,937
Professional services		748	788
License		37	216
Total revenues		56,002	43,941
Segment operating expense		(14,169)	(12,892)
Operating income (loss)		41,833	31,049
Depreciation expense		177	217
Tools | Operating Segments
Segment revenues:
Transactional and maintenance		10,872	9,922
Professional services		6,278	5,911
License		6,783	14,278
Total revenues		23,933	30,111
Segment operating expense		(25,294)	(29,539)
Operating income (loss)		(1,361)	572
Depreciation expense		$ 635	$ 783

[1] Cost of revenues and selling, general and administrative expenses exclude the amortization of intangible assets. See Note 4.