Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 26, 2020	Sep. 27, 2019
Current assets:
Allowance for doubtful accounts	$ 0.9	$ 0.8
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	25.0	25.0
Preferred stock, shares issued	0.0	0.0
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized	525.0	525.0
Common stock, shares issued	232.1	230.2
Common stock, shares outstanding	167.1	170.1

Amount of allowance for credit loss on accounts receivable, classified as current.

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