Convertible Senior Notes (Tables)

6 Months Ended

Dec. 30, 2017

Debt Disclosure [Abstract]

Convertible Debt

As of December 30, 2017, the 2024 Notes consisted of the following (in millions):

Liability component:	December 30, 2017			July 1, 2017
Principal	$	450.0		$	450.0
Unamortized debt discount	(124.3		)	(132.5		)
Net carrying amount of the liability component	$	325.7		$	317.5

Interest Expense on Convertible Debt

The following table sets forth interest expense information related to the 2024 Notes for the three and six months ended December 30, 2017:

	December 30, 2017
(in millions, except percentages)	Three Months Ended			Six Months Ended
Contractual interest expense	$	0.3		$	0.6
Amortization of the debt discount	4.1			8.2
Total interest expense	$	4.4		$	8.8
Effective interest rate on the liability component	5.4		%	5.4		%