Income Taxes Unrecognized Tax Benefits (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefit Related to Methods of Accounting	$ 1,700
Unrecognized Tax Benefits Related to Methods of Accounting - 451(b)	543
Increase in Unrecognized Tax Benefits is Reasonably Possible	120
Decrease in Unrecognized Tax Benefits is Reasonably Possible	100
Current unrecognized tax benefits	728	$ 590
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	216	175
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	636
Unrecognized Tax Benefits Rollforward (Table Amounts) [Abstract]
Unrecognized tax benefits at beginning of the year	1,630	1,481	$ 1,223
Additions based on tax positions related to the current year	262	355	187
Additions for tax positions of prior years	6	47	270
Reductions for tax positions of prior years	(124)	(251)	(190)
Settlements with taxing authorities	(110)	(1)	(7)
Other, net	(1)	(1)	(2)
Net change in unrecognized tax benefits	33	149	258
Unrecognized tax benefits at end of the year	$ 1,663	$ 1,630	$ 1,481