Consolidated Statements Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]
Balance (shares) at Dec. 31, 2019		557
Balance at Dec. 31, 2019	$ 19,225	$ 2,655	$ 18,958	$ (2,405)	$ 17		$ (8)	$ 19,217	$ 18,950
Balance (Accounting Standards Update 2019-05) at Dec. 31, 2019						$ (8)	$ (8)
Comprehensive income
Net earnings including noncontrolling interests	863		860		3
Other comprehensive income (loss)	(296)			(300)	4
Total comprehensive income	$ 567
Common Stock, Dividends, Per Share, Cash Paid	$ 0.72
Cash dividends paid	$ (405)		(405)
Stock Repurchased During Period, Value	$ (112)		(112)
Stock Repurchased During Period, Shares		(3)
Stock compensation expense, shares	2
Stock compensation expense	$ 75	$ 75
Other, shares		0
Other	(31)	$ (25)	0	0	(6)
Balance (shares) at Jun. 30, 2020		556
Balance at Jun. 30, 2020	19,311	$ 2,705	19,293	(2,705)	18
Balance (shares) at Mar. 31, 2020		555
Balance at Mar. 31, 2020	18,976	$ 2,690	19,026	(2,764)	24
Comprehensive income
Net earnings including noncontrolling interests	472		469		3
Other comprehensive income (loss)	59			59	0
Total comprehensive income	$ 531
Common Stock, Dividends, Per Share, Cash Paid	$ 0.36
Cash dividends paid	$ (202)		(202)
Stock compensation expense, shares	1
Stock compensation expense	$ 24	$ 24
Other, shares		0
Other	(18)	$ (9)	0	0	(9)
Balance (shares) at Jun. 30, 2020		556
Balance at Jun. 30, 2020	19,311	$ 2,705	19,293	(2,705)	18
Balance (shares) at Dec. 31, 2020		556
Balance at Dec. 31, 2020	20,022	$ 2,824	19,780	(2,604)	22
Comprehensive income
Net earnings including noncontrolling interests	1,405		1,401		4
Other comprehensive income (loss)	483			483	0
Total comprehensive income	$ 1,888
Common Stock, Dividends, Per Share, Cash Paid	$ 0.74
Cash dividends paid	$ (417)		(417)
Stock compensation expense, shares		3
Stock compensation expense	114	$ 114
Other, shares		0
Other	(4)	$ 3	(2)		(5)
Balance (shares) at Jun. 30, 2021		559
Balance at Jun. 30, 2021	21,603	$ 2,941	20,762	(2,121)	21
Balance (shares) at Mar. 31, 2021		559
Balance at Mar. 31, 2021	20,861	$ 2,858	20,261	(2,278)	20
Comprehensive income
Net earnings including noncontrolling interests	712		712		0
Other comprehensive income (loss)	157			157	0
Total comprehensive income	$ 869
Common Stock, Dividends, Per Share, Cash Paid	$ 0.37
Cash dividends paid	$ (209)		(209)
Stock compensation expense, shares	0
Stock compensation expense	$ 38	$ 38
Other, shares		0
Other	44	$ 45	(2)	0	1
Balance (shares) at Jun. 30, 2021		559
Balance at Jun. 30, 2021	$ 21,603	$ 2,941	$ 20,762	$ (2,121)	$ 21