Amounts in Paragraphs - Income Taxes (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate	16.10%	21.60%	14.50%
IT services divestiture nondeductible goodwill	$ 0	$ 250	$ 0
Significant matters affecting comparability	(1.20%)		(1.30%)
Income taxes paid, net	$ 1,500	1,300	$ 312
Income Taxes Receivable	850	$ 571
Tax Credit Carryforward, Amount	510
Operating Loss Carryforwards	349
Tax Credit Carryforward, Valuation Allowance	295
Operating Loss Carryforwards, Valuation Allowance	$ 32