Investments (Tables)

12 Months Ended

Jan. 28, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Securities

All investments are classified as available-for-sale and include the following:

	January 28, 2017							January 30, 2016
(in millions)	Cost		Unrealized Gain (Loss)			Fair Value		Cost		Unrealized Gain (Loss)			Fair Value
US Treasury securities	$	8.8	$	(0.7	)	$	8.1	$	9.2	$	(0.4	)	$	8.8
US government agency securities	4.6		(0.2		)	4.4		4.0		—			4.0
Corporate bonds and notes	11.0		(0.1		)	10.9		10.8		—			10.8
Corporate equity securities	3.5		0.3			3.8		3.5		(0.3		)	3.2
Total investments	$	27.9	$	(0.7	)	$	27.2	$	27.5	$	(0.7	)	$	26.8

Investments in debt securities outstanding as of January 28, 2017 mature as follows:

(in millions)	Cost		Fair Value
Less than one year	$	1.8	$	1.2
Year two through year five	13.4		13.2
Year six through year ten	9.2		9.0
After ten years	—		—
Total investment in debt securities	$	24.4	$	23.4