Stockholders' Equity and Stock-Based Compensation (Components of Share-Based Compensation Program) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pretax compensation expense	$ 298	$ 288	$ 306
Income tax benefit	(60)	(59)	(65)
Total stock-based compensation expense, net of income taxes	238	229	241
RSUs/PSUs
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pretax compensation expense	174	159	173
Income tax benefit	(35)	(33)	(38)
Total stock-based compensation expense, net of income taxes	139	126	135
Stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pretax compensation expense	124	129	133
Income tax benefit	(25)	(26)	(27)
Total stock-based compensation expense, net of income taxes	$ 99	$ 103	$ 106