Income Taxes Effective Income Tax Rate Reconciliation (Details 2) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Reconciliation (Table Amounts) [Abstract]
Income tax expense at statutory rate	$ 493	$ 1,226	$ 1,877
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Research credit	$ (210)	$ (177)	$ (192)
Research credit, Percent	(8.90%)	(3.00%)	(2.20%)
Effective Income Tax Rate Reconciliation, FDII, Percent	(2.70%)	(1.10%)	(0.60%)
Effective Income Tax Rate Reconciliation, FDII, Amount	$ (63)	$ (66)	$ (50)
IT services divestiture nondeductible goodwill	$ 0	$ 0	$ 250
IT services divestiture nondeductible goodwill, Percent	0.00%	0.00%	2.80%
Income Tax Reconciliation Deductions Taxing Authorities Settlements	$ (1)	$ (86)	$ 0
Income Tax Reconciliation Deductions Taxing Authorities Settlements, Percent	0.00%	(1.50%)	0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount	$ 69	$ 22	$ 17
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent	2.90%	0.40%	0.20%
Other, net	$ 2	$ 21	$ 31
Other net, Percent	0.10%	0.30%	0.40%
Total federal and foreign income tax expense	$ 290	$ 940	$ 1,933
Effective income tax rate	12.40%	16.10%	21.60%