Fair Value Measurements (Tables)

6 Months Ended

Nov. 29, 2014

Fair Value Disclosures [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis

The following tables set forth financial assets and liabilities measured at fair value in the Condensed Consolidated Balance Sheets and the respective pricing levels to which the fair value measurements are classified within the fair value hierarchy as of November 29, 2014 and May 31, 2014.

(In millions)	Fair Value Measurements
	November 29, 2014		May 31, 2014
Financial Assets	Quoted Prices with Other Observable Inputs (Level 2)		Quoted Prices with Other Observable Inputs (Level 2)
Available-for-sale marketable securities:
Asset-backed securities	$	0.3	$	0.4
Corporate securities	0.8		1.2
Government obligations	4.9		7.9
Mortgage-backed securities	0.6		1.6
Foreign currency forward contracts	0.4		0.2
Deferred compensation plan	7.2		6.3
Total	$	14.2	$	17.6
Financial Liabilities
Foreign currency forward contracts	$	0.3	$	0.1
Total	$	0.3	$	0.1

Unrealized Gain (Loss) on Investments

The following is a summary of the carrying and market values of the company's marketable securities as of the respective dates.

	November 29, 2014
(In millions)	Cost		Unrealized Gain		Unrealized Loss		Market Value
Asset-backed securities	$	0.3	$	—	$	—	$	0.3
Corporate securities	0.8		—		—		0.8
Government obligations	4.9		—		—		4.9
Mortgage-backed securities	0.6		—		—		0.6
Total	$	6.6	$	—	$	—	$	6.6
	May 31, 2014
(In millions)	Cost		Unrealized Gain		Unrealized Loss		Market Value
Asset-backed securities	$	0.4	$	—	$	—	$	0.4
Corporate securities	1.2		—		—		1.2
Government obligations	7.9		—		—		7.9
Mortgage-backed securities	1.6		—		—		1.6
Total	$	11.1	$	—	$	—	$	11.1

Investments Classified by Contractual Maturity Date

Maturities of debt securities included in marketable securities as of November 29, 2014, are as follows.

(In millions)	Cost		Fair Value
Due within one year	$	1.1	$	1.1
Due after one year through five years	5.5		5.5
Due after five years through ten years	—		—
Total	$	6.6	$	6.6