Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

The following table presents details of the Company’s total goodwill:


As of October 1, 2013	$	1,818,334
Goodwill resulting from acquisitions(1)		100,935
Other		5,956

As of September 30, 2014		1,925,225
Goodwill resulting from acquisitions(2)		123,987
Other		(119	)

As of September 30, 2015	$	2,049,093

(1)

Mainly relates to the acquisition of Celcite. In allocating the total preliminary purchase price of Celcite based on estimated fair values, the Company recorded $78,142 of goodwill, $46,432 of customer relationships to be amortized over approximately four years, $22,372 of core technology to be amortized over approximately three years and $1,781 of other intangible assets to be amortized over approximately three years.

(2)

Mainly relates to the acquisition of a substantial majority of the BSS assets of Comverse. In allocating the total preliminary purchase price of the acquired assets based on estimated fair values, the Company recorded $118,101 of goodwill, $97,000 of core technology to be amortized over a weighted average of approximately four years and $38,639 of customer relationships to be amortized over a weighted average of approximately five years.

Details Regarding Total Definite-Lived Purchased Intangible Assets

The following table presents details regarding the Company’s total definite-lived purchased intangible assets:


	Estimated Useful Life (in years)		Gross		Accumulated Amortization			Net
September 30, 2015
Core technology		2-8	$	531,669	$	(398,898	)	$	132,771
Customer relationships		3-15		439,435		(328,747	)		110,688
Intellectual property rights and purchased computer software		—		51,996		(51,996	)		—
Other		3-10		31,666		(22,608	)		9,058

Total			$	1,054,766	$	(802,249	)	$	252,517

September 30, 2014
Core technology		3-8	$	434,669	$	(367,609	)	$	67,060
Customer relationships		4-15		398,519		(297,791	)		100,728
Intellectual property rights and purchased computer software		—		51,996		(51,996	)		—
Other		1-10		31,666		(18,227	)		13,439

Total			$	916,850	$	(735,623	)	$	181,227

Amortization Expense on Definite-Lived Intangible Assets

The following table presents the amortization expense of the Company’s definite-lived purchased intangible assets, included in each financial statement caption reported in the consolidated statements of income:


	Year Ended September 30,
	2015		2014		2013
Cost of revenue	$	1,609	$	1,609	$	1,609
Amortization of definite-lived purchased intangible assets		65,017		55,799		34,543

Total	$	66,626	$	57,408	$	36,152

Estimated Future Amortization Expense

The estimated future amortization expense of definite-lived purchased intangible assets as of September 30, 2015 is as follows:


	Amount
Fiscal year:
2016	$	90,488
2017		76,742
2018		46,958
2019		22,863
2020		10,707
Thereafter		4,759

Total	$	252,517