Summary of Significant Accounting Policies (Basic and Diluted EPS Calculation for Continuing Operations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net income before non-controlling interests	$ 3,802	$ 3,087	$ 3,174
Less: Net income attributable to non-controlling interests	46	37	31
Net income attributable to the Company	$ 3,756	$ 3,050	$ 3,143
Basic weighted average common shares outstanding (in shares)	494	499	507
Dilutive effect of potentially issuable common shares (in shares)	5	6	6
Diluted weighted average common shares outstanding (in shares)	499	505	513
Average stock price used to calculate common stock equivalents (in dollars per share)	$ 182.30	$ 160.39	$ 141.57