Segments - Revenue Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021		Jun. 30, 2022	Jun. 30, 2021
Revenue
Revenue	$ 15,535	$ 14,218	[1]	$ 29,732	$ 27,405	[1]
Business Segments
Revenue
Revenue	15,355	13,941		29,328	26,843
Other
Revenue
Other - divested businesses	162	197		316	394
Other revenue	$ 18	$ 80		$ 88	$ 167

[1] Reclassified to reflect discontinued operations presentation.