CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2017	Oct. 01, 2017
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 34.8	$ 43.8
Preferred stock, par value (USD per share)	$ 1.00	$ 1.00
Preferred stock, authorized	1,000	1,000
Preferred stock, issued	0	0
Common stock, par value (USD per share)	$ 0.20	$ 0.20
Common stock, authorized	250,000,000	250,000,000
Common stock, issued	117,500,000	116,300,000
Common stock, outstanding	117,500,000	116,300,000