Equity, Reclassification Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Other income, net		$ 502	$ 179	$ 16
Revenues	[1]	144,766	176,383	113,977
Total before tax		11,768	15,307	1,543
Tax benefit (expense)		(2,619)	(3,428)	(255)
Net income		9,149	11,879	1,288
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Net income		17	(325)	(90)
Net Gain (Loss) on Pension and Other Postretirement Benefits [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Total before tax		32	(91)	(63)
Tax benefit (expense)		(8)	20	14
Net income		24	(71)	(49)
Net Actuarial Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Other income, net	[2]	12	(52)	(80)
Prior Service Credit [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Other income, net	[2]	22	22	25
Settlement Loss [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Other income, net	[2]	(2)	(61)	(8)
Losses on Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Total before tax		(8)	(286)	(46)
Tax benefit (expense)		1	32	5
Net income		(7)	(254)	(41)
Losses on Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Loss [Member] | Commodity Contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Revenues		$ (8)	$ (286)	$ (46)

[1] Includes excise taxes on sales by certain of our foreign operations of $5,765 million, $5,194 million, and $5,645 million for the years ended December 31, 2023, 2022, and 2021.

[2] These accumulated other comprehensive loss components are included in the computation of net periodic benefit cost, as discussed in Note 13.