Investments (Tables)

9 Months Ended

Oct. 29, 2016

Investments, Debt and Equity Securities [Abstract]

Schedule of available for sale securities

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

	October 29, 2016							January 30, 2016							October 31, 2015
(in millions)	Cost		Unrealized gain (loss)			Fair Value		Cost		Unrealized gain (loss)			Fair Value		Cost		Unrealized gain (loss)			Fair Value
US Treasury securities	$	8.8	$	(0.5	)	$	8.3	$	9.2	$	(0.4	)	$	8.8	$	9.2	$	(0.4	)	$	8.8
US government agency securities	4.6		(0.1		)	4.5		4.0		—			4.0		2.3		—			2.3
Corporate bonds and notes	11.0		0.1			11.1		10.8		—			10.8		10.5		—			10.5
Corporate equity securities	3.5		0.1			3.6		3.5		(0.3		)	3.2		3.4		—			3.4
Total investments	$	27.9	$	(0.4	)	$	27.5	$	27.5	$	(0.7	)	$	26.8	$	25.4	$	(0.4	)	$	25.0

Investments in debt securities outstanding as of October 29, 2016 mature as follows:

(in millions)	Cost		Fair Value
Less than one year	$	1.3	$	0.8
Year two through year five	12.6		12.6
Year six through year ten	10.5		10.5
After ten years	—		—
Total investment in debt securities	$	24.4	$	23.9