Shareholders' Equity - Repurchases of Common Shares in Open Market (Details) - Open market repurchases - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended							9 Months Ended	12 Months Ended
	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Sep. 24, 2016	Jun. 25, 2016	Mar. 26, 2016	Dec. 26, 2015	Jul. 01, 2017	Sep. 24, 2016
Stock Repurchase Program [Line Items]
Number of shares repurchased (in shares)	30,356	31,070	44,333	28,579	41,238	71,766	25,984	105,759	167,567
Average repurchase price per share (in dollars per share)	$ 148.24	$ 128.74	$ 112.78	$ 104.97	$ 97.00	$ 97.54	$ 115.45
Amount	$ 4,500	$ 4,001	$ 5,000	$ 3,000	$ 4,000	$ 7,000	$ 3,000	$ 13,501	$ 17,000