Stock-Based Employee Compensation - Stock Option (Narrative) (Details) - Employee Stock Option $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended
	Oct. 02, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized	$ 0.9
Compensation cost not yet recognized, period for recognition	1 year
Options vested and expected to vest (shares) | shares	1.6
Options vested and expected to vest, weighted average exercise price (usd per share) | $ / shares	$ 11.75
Options vested and expecting to vest, weighted average remaining contractual term	3 years 8 months 16 days
Options vested and expected to vest, aggregate intrinsic value	$ 18.5
Options, fully vested, outstanding (shares) | shares	1.2
Options, fully vested, outstanding, weighted average exercise price (usd per share) | $ / shares	$ 10.08
Options, fully vested, weighted average remaining contractual term	3 years 2 months 23 days
Options, fully vested, aggregate intrinsic value	$ 15.1