Stockholder's Equity (Tables)

3 Months Ended

Dec. 29, 2017

Stockholders' Equity Note [Abstract]

Schedule of share-based compensation expense

The following table summarizes the share-based compensation expense by line item in the Statements of Operations (in millions):

	Three Months Ended
	December 29, 2017		December 30, 2016
Cost of goods sold	$	4.1	$	3.8
Research and development	11.2		8.3
Selling, general and administrative	10.5		9.5
Total share-based compensation	$	25.8	$	21.6