Goodwill and Intangible Assets (Tables)

6 Months Ended

Jan. 31, 2016

Intangible Assets

Intangible assets are summarized as follows:

			As of January 31, 2016						As of July 31, 2015
(in millions)	Weighted Average Amortization Period		Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Developed technologies		10 years	$	29.9	$	13.5	$	16.4	$	30.2	$	12.3	$	17.9
Customer relationships		13 years		47.1		22.6		24.5		44.2		20.3		23.9
Trade names*		3 years		9.6		0.9		8.7		8.6		0.9		7.7
Total intangible assets			$	86.6	$	37.0	$	49.6	$	83.0	$	33.5	$	49.5

* $7.6 million of trade names are indefinite-lived as of January 31, 2016 and July 31, 2015, respectively, and $1.1 million and $0.1 million are finite-lived trade names as of January 31, 2016 and July 31, 2015, respectively.

Estimated Future Amortization Expense Related to Intangible Assets

The estimated future amortization expense related to intangible assets for each of the five succeeding fiscal years is expected to be as follows:

	Estimated
	Future
	Amortization
(in millions)	Expense
2016 (remaining six months)	$	4.4
2017		7.9
2018		6.9
2019		5.7
2020		5.3
Thereafter		11.8
	$	42.0