Acquisitions and Dispositions (Pro-Forma Information) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Combination and Asset Acquisition [Abstract]
Revenue	$ 20,008	$ 17,586	$ 17,323
Net income attributable to the Company	$ 3,179	$ 2,042	$ 1,877
Basic net income per share attributable to the Company (in dollars per share)	$ 6.27	$ 4.03	$ 3.71
Diluted net income per share attributable to the Company (in dollars per share)	$ 6.20	$ 3.99	$ 3.67