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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 9,945	$ 6,321	$ 6,667
Other comprehensive income (loss), net of tax (Note 20)
Foreign currency translation adjustments and other	80	(523)	(6)
Defined benefit plans	4,126	(1,795)	(2,122)
Other comprehensive income (loss), net of tax	4,206	(2,318)	(2,128)
Comprehensive income	14,151	4,003	4,539
Comprehensive loss attributable to noncontrolling interests	87	92	76
Comprehensive income attributable to stockholders	$ 14,238	$ 4,095	$ 4,615

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-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 8
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