Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Line Items]
Operating lease liability	$ 570
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities
Finance Lease, Liability	$ 81
Operating Lease, Expense	200	$ 202
Finance Lease, Right-of-Use Asset, Amortization	11	14
Finance Lease, Interest Expense	7	7
Operating Leases, Rent Expense			$ 168
Property, plant and equipment, net	4,228	4,454
Other assets [Member]
Leases [Line Items]
Operating lease right-of-use asset	552	624
Accrued expenses and other liabilities
Leases [Line Items]
Operating lease liability	$ 570	$ 647
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities	Accrued Liabilities
Property, plant and equipment
Leases [Line Items]
Finance Lease, Liability	$ 65	$ 77
Debt
Leases [Line Items]
Finance lease right-of-use asset	81	93
Real Estate Segment
Leases [Line Items]
2021	5
2022	1
2023	1
Operating Lease, Lease Income	32	33	$ 39
Property, plant and equipment, net	310	299
Real Estate Segment | Assets leased to others
Leases [Line Items]
Property, plant and equipment, net	222	222
Energy Segment
Leases [Line Items]
Operating lease right-of-use asset	37	48
Operating lease liability	$ 38	$ 48
Lessee term	3 years 1 month 6 days	3 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.50%	5.60%
Property, plant and equipment, net	$ 2,747	$ 2,888
Automotive Segment
Leases [Line Items]
Operating lease right-of-use asset	436	501
Operating lease liability	$ 456	$ 527
Lessee term	4 years 7 months 6 days	5 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.70%	5.70%
Operating Lease, Expense	$ 166	$ 173
Property, plant and equipment, net	857	916
Food Packaging Segment
Leases [Line Items]
Operating lease right-of-use asset	32	34
Operating lease liability	$ 36	$ 38
Lessee term	11 years 1 month 6 days	11 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	7.40%	7.40%
Property, plant and equipment, net	$ 160	$ 161
Other Segments and Holding Company
Leases [Line Items]
Operating lease right-of-use asset	47	41
Operating lease liability	$ 40	$ 34