Segment And Geographic Information (Geographic Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Information
Revenues	$ 101,556	$ 85,249	$ 64,355
Long-Lived Assets	9,933	9,803
UNITED STATES
Segment Information
Revenues	43,272	35,396	25,986
Long-Lived Assets	6,322	6,098
Switzerland [Member]
Segment Information
Revenues	21,821	18,453	13,819
CAYMAN ISLANDS
Segment Information
Revenues	5,883	5,515	3,958
BRAZIL
Segment Information
Revenues	4,004	3,213	2,357
Long-Lived Assets	801	760
MEXICO
Segment Information
Revenues	3,709	2,934	2,244
UNITED KINGDOM
Segment Information
Revenues	2,231	1,848	1,519
Other Foreign [Member]
Segment Information
Revenues	18,364	16,072	13,192
Long-Lived Assets	2,810	2,945
CANADA
Segment Information
Revenues	$ 2,272	$ 1,818	$ 1,280