Other Financial Data - Stockholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions				3 Months Ended								12 Months Ended
	Jan. 15, 2020	Nov. 14, 2019	Nov. 13, 2019	Dec. 31, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Share repurchase program, maximum amount				$ 14,000,000,000.0								$ 14,000,000,000.0
Share repurchase authority utilized during period												12,700,000,000
Share repurchase program, available for repurchases				$ 1,300,000,000								$ 1,300,000,000
Shares Repurchased (in shares)												2.3	1.2	5.7
Average Price (US$ per share)												$ 137.35	$ 112.42	$ 85.32
Aggregate Amount												$ 315,000,000	$ 132,000,000	$ 483,000,000
Dividends declared per share (US$ per share)		$ 0.64	$ 0.57	$ 0.64	$ 0.57	$ 0.57	$ 0.57	$ 0.57	$ 0.52	$ 0.52	$ 0.52	$ 2.35	$ 2.13	$ 1.93
Payment of dividends												$ 379,000,000	$ 337,000,000	$ 307,000,000
Subsequent Event
Subsequent Event [Line Items]
Payment of dividends	$ 109,000,000