Shareholders' Equity - Summary of Dividends Declared and Paid (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended					12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Sep. 30, 2017
Equity [Abstract]
Dividends per share (in dollars per share)	$ 0.63	$ 0.63	$ 0.63	$ 0.57	$ 0.57	$ 2.4
Dividend amount	$ 3,232	$ 3,252	$ 3,281	$ 2,988	$ 3,042	$ 12,563