Goodwill and Intangible Assets (Tables)

6 Months Ended

Apr. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in goodwill

The following table presents the changes in goodwill during the first six months of fiscal 2016:

	Six Months Ended
	April 30, 2016
Balance as of October 31, 2015	$	1,636,526
Goodwill adjustment related to acquisitions (1)	2,396
Foreign currency translation adjustment	243
Balance as of April 30, 2016	$	1,639,165

Finite lived intangible assets

As of April 30, 2016 and October 31, 2015, the Company’s intangible assets consisted of the following:

	April 30, 2016				October 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	$	625,989	$	123,691	$	624,900	$	88,913
Technology-based	15,857		6,753		15,100		4,834
IPR&D	37,062		90		37,264		—
Total (1)	$	678,908	$	130,534	$	677,264	$	93,747

Amortization expense

The Company expects annual amortization expense for intangible assets to be:

Fiscal Year	Amortization Expense
Remainder of fiscal 2016		$36,960
2017		$73,921
2018		$72,862
2019		$69,913
2020		$69,674