Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Apr. 02, 2017	Apr. 02, 2017	Mar. 27, 2016	Oct. 02, 2016
Equity [Abstract]
Authorized shares of common stock	2,400,000,000	2,400,000,000		2,400,000,000
Par value of common stock	$ 0.001	$ 0.001		$ 0.001
Authorized shares of preferred stock	7,500,000	7,500,000
Outstanding shares of preferred stock	0	0
Shares of common stock repurchased		19,000,000	27,500,000
Total cost of common stock repurchased		$ 1,046.1	$ 1,584.5
Shares available for repurchase	98,900,000	98,900,000
Cash dividend declared to shareholders	$ 0.25	$ 0.25
Dividends payable, payment date	May 26, 2017
Dividends payable, record date	May 11, 2017