Stockholders' Equity and Stock-Based Compensation (Components of Share-Based Compensation Program) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pretax compensation expense	$ 336	$ 218	$ 187
Income tax benefit	(68)	(44)	(39)
Total stock-based compensation expense, net of income taxes	268	174	148
RSUs/PSUs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pretax compensation expense	195	129	114
Income tax benefit	(40)	(26)	(24)
Total stock-based compensation expense, net of income taxes	155	103	90
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pretax compensation expense	141	89	73
Income tax benefit	(28)	(18)	(15)
Total stock-based compensation expense, net of income taxes	$ 113	$ 71	$ 58