CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Sep. 27, 2019	Sep. 28, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 46.5	$ 41.1
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	189,000,000	189,000,000
Common stock, shares issued (in shares)	90,800,000	91,200,000
Common stock, shares outstanding (in shares)	90,800,000	91,200,000