Fair value measurements (Tables)

3 Months Ended

Oct. 31, 2017

Cash, Cash Equivalents and Marketable Securities

Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis

The following tables provide the assets and liabilities carried at fair value and measured on a recurring basis at October 31, 2017 and July 31, 2017:

	Fair Value Measurement as of October 31, 2017
(in millions)	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash	$	43.4	$	-	$	-		$	43.4	$	43.4	$	-
Level 1:
Money market funds		32.4		-		-			32.4		32.4		-
Subtotal	$	75.8	$	-	$	-		$	75.8	$	75.8	$	-
Level 2:
U.S. agency securities	$	4.0	$	-	$	-		$	4.0	$	-	$	4.0
Non-U.S. government securities		10.5		-		-			10.5		-		10.5
Commercial paper		27.7		-		-			27.7		21.0		6.7
Corporate securities		40.4		-		(0.03	)		40.4		-		40.4
Asset-backed securities		24.5		-		(0.02	)		24.5		-		24.5
Subtotal	$	107.1	$	-	$	(0.05	)	$	107.1	$	21.0	$	86.1
Total	$	182.9	$	-	$	(0.05	)	$	182.9	$	96.8	$	86.1

	Fair Value Measurement as of July 31, 2017
(in millions)	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value		Cash and Cash Equivalents		Marketable Securities
Cash	$	46.7	$	-	$	-		$	46.7	$	46.7	$	-
Level 1:
Money market funds		38.4		-		-			38.4		38.4		-
Subtotal	$	85.1	$	-	$	-		$	85.1	$	85.1	$	-
Level 2:
U.S. Treasury securities	$	10.0	$	-	$	-		$	10.0	$	10.0	$	-
U.S. agency securities		7.0		-		-			7.0		7.0		-
Non-U.S. government securities		3.9		-		-			3.9		-		3.9
Commercial paper		30.1		-		-			30.1		27.2		2.9
Corporate securities		28.0		-		(0.01	)		28.0		-		28.0
Asset-backed securities		10.2		-		-			10.2		-		10.2
Subtotal	$	89.2	$	-	$	(0.01	)	$	89.2	$	44.2	$	45.0
Total	$	174.3	$	-	$	(0.01	)	$	174.3	$	129.3	$	45.0

Plan Assets for Deferred Compensation

Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis

Plan assets for deferred compensation	As of		As of
	October 31,		July 31,
(in millions)	2017		2017
Level 1:
Plan assets for deferred compensation		4.8		4.7
Total	$	4.8	$	4.7

Foreign Currency Forward Contracts

Assets and Liabilities Carried at Fair Value and Measured on Recurring Basis

Foreign currency forward contracts	As of		As of
	October 31,		July 31,
(in millions)	2017		2017
Level 2:
Foreign currency forward contracts asset		0.1		0.6
Total	$	0.1	$	0.6