Stockholder's Equity (Tables)

9 Months Ended

Jun. 28, 2019

Stockholders' Equity Note [Abstract]

Dividends Declared

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				Nine Months Ended
	June 28, 2019		June 29, 2018		June 28, 2019		June 29, 2018
Cost of goods sold	$	1.3	$	3.3	$	8.2	$	11.6
Research and development	9.5		6.5		31.9		32.2
Selling, general and administrative	5.2		9.7		18.5		42.5
Total share-based compensation	$	16.0	$	19.5	$	58.6	$	86.3