Leases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Leases
Operating lease right-of-use asset	$ 520		$ 520		$ 526
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets		Other Assets		Other Assets
Operating lease liability	$ 524		$ 524		$ 531
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities		Accrued Liabilities		Accrued Liabilities
Finance lease right-of-use asset	$ 50		$ 50		$ 55
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net		Property, plant and equipment, net		Property, plant and equipment, net
Finance lease, liability	$ 65		$ 65		$ 70
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities		Accrued Liabilities		Accrued Liabilities
Operating lease cost	$ 46	$ 44	$ 132	$ 134
Amortization of financing lease right-of-use assets	2	1	6	5
Interest expense on financing lease liabilities	2	2	5	4
Property, plant and equipment, net	3,865		3,865		$ 3,969
Energy
Leases
Operating lease right-of-use asset	55		55		53
Operating lease liability	$ 52		$ 52		$ 49
Lease term	5 years 1 month 6 days		5 years 1 month 6 days		5 years 4 months 24 days
Operating lease, discount rate percentage	7.10%		7.10%		6.70%
Property, plant and equipment, net	$ 2,503		$ 2,503		$ 2,594
Automotive
Leases
Operating lease right-of-use asset	420		420		422
Operating lease liability	$ 431		$ 431		$ 434
Lease term	5 years 6 months		5 years 6 months		5 years 4 months 24 days
Operating lease, discount rate percentage	6.00%		6.00%		5.90%
Operating lease cost			$ 106	108
Revenues from operating leases	$ 15	$ 14	$ 45	$ 43
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Revenue	Other Operating Revenue	Other Operating Revenue	Other Operating Revenue
Variable lease costs	$ 25	$ 24	$ 72	$ 74
Property, plant and equipment, net	810		810		$ 822
Food Packaging
Leases
Operating lease right-of-use asset	20		20		22
Operating lease liability	$ 23		$ 23		$ 25
Lease term	9 years 1 month 6 days		9 years 1 month 6 days		9 years 1 month 6 days
Operating lease, discount rate percentage	7.40%		7.40%		7.40%
Property, plant and equipment, net	$ 126		$ 126		$ 134
Other Segments and Holding Company
Leases
Operating lease right-of-use asset	25		25		29
Operating lease liability	18		18		23
Real Estate Segment
Leases
Revenues from operating leases	$ 2	$ 3	$ 7	$ 15
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Revenue	Other Operating Revenue	Other Operating Revenue	Other Operating Revenue
Property, plant and equipment, net	$ 370		$ 370		363
Real Estate Segment | Assets leased to others
Leases
Property, plant and equipment, net	$ 260		$ 260		$ 252