Income Tax (Provision for Income Tax from Continuing Operations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
U.S. federal	$ 62	$ 271	$ (189)
U.S. state and local	38	27	4
Non-U.S.	795	882	850
Subtotal	895	1,180	665
Deferred:
U.S. federal	837	(115)	(235)
U.S. state and local	(2)	1	0
Non-U.S.	(179)	443	456
Subtotal	656	329	221
Current and Deferred:
Provision for income tax expense (benefit)	$ 1,551	$ 1,509	$ 886