Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Leases
Operating lease right-of-use asset	$ 499		$ 527
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets		Other Assets
Operating lease liabilities	$ 505		$ 530
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities		Accrued Liabilities
Finance lease right-of-use assets	$ 70		$ 72
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net		Property, plant and equipment, net
Finance lease liabilities	$ 81		$ 83
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities		Accrued Liabilities
Operating lease cost	$ 44	$ 42
Amortization of financing lease right-of-use assets	2	2
Interest expense on financing lease liabilities	1	2
Revenues from operating leases		15
Property, plant and equipment, net	3,824		$ 3,843
Energy
Leases
Operating lease right-of-use asset	70		75
Operating lease liabilities	$ 69		$ 71
Lease term	5 years 2 months 12 days		5 years 4 months 24 days
Operating lease, discount rate percentage	7.30%		7.90%
Property, plant and equipment, net	$ 2,484		$ 2,504
Automotive
Leases
Operating lease right-of-use asset	387		409
Operating lease liabilities	$ 399		$ 421
Lease term	5 years 4 months 24 days		5 years 4 months 24 days
Operating lease, discount rate percentage	5.90%		5.90%
Operating lease cost	$ 31	$ 33
Revenues from operating leases	$ 14
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Revenue	Other Operating Revenue
Variable lease costs	$ 24	$ 24
Property, plant and equipment, net	815		$ 808
Food Packaging
Leases
Operating lease right-of-use asset	19		19
Operating lease liabilities	$ 21		$ 22
Lease term	8 years 4 months 24 days		9 years 1 month 6 days
Operating lease, discount rate percentage	7.40%		7.40%
Property, plant and equipment, net	$ 118		$ 124
Other Segments and Holding Company
Leases
Operating lease right-of-use asset	23		24
Operating lease liabilities	16		16
Real Estate Segment
Leases
Revenues from operating leases	3	3
Property, plant and equipment, net	350		$ 350
Real Estate Segment | Assets leased to others
Leases
Property, plant and equipment, net	$ 268	$ 236