Dividends (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended		9 Months Ended
	Sep. 22, 2020	Jun. 30, 2020	Mar. 24, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 1.25	$ 1.25	$ 1.08	$ 1.25	$ 1.08	$ 3.58	$ 3.06
Payments of Ordinary Dividends, Common Stock	$ 1,188	$ 1,188	$ 1,024			$ 3,400	$ 2,908