Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset	$ 540		$ 552
Operating lease liability	$ 557		$ 569
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities		Accrued Liabilities
Operating lease expense	$ 51	$ 51
Amortization of financing lease right-of-use assets	3	3
Interest expense on financing lease liabilities	1	2
Property, plant and equipment, net	4,231		$ 4,228
Energy Segment
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset	41		37
Operating lease liability	$ 42		$ 38
Operating lease weighted average lease term, lessee	4 years 6 months		3 years 1 month 6 days
Operating lease weighted average discount rate, lessee (percent)	5.50%		5.50%
Property, plant and equipment, net	$ 2,774		$ 2,747
Automotive Segment
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset	423		436
Operating lease liability	$ 442		$ 456
Operating lease weighted average lease term, lessee	4 years 7 months 6 days		4 years 7 months 6 days
Operating lease weighted average discount rate, lessee (percent)	5.70%		5.70%
Operating lease expense	$ 43	43
Property, plant and equipment, net	845		$ 857
Food Packaging Segment
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset	30		32
Operating lease liability	$ 34		$ 35
Operating lease weighted average lease term, lessee	11 years 1 month 6 days		11 years 1 month 6 days
Operating lease weighted average discount rate, lessee (percent)	7.40%		7.40%
Property, plant and equipment, net	$ 152		$ 160
Other Segments and Holding Company
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset	46		47
Operating lease liability	39		40
Real Estate Segment
Lessee, Lease, Description [Line Items]
Property, plant and equipment, net	308		310
Operating lease rental revenue	5	$ 8
Assets leased to others | Real Estate Segment
Lessee, Lease, Description [Line Items]
Property, plant and equipment, net	222		222
Other assets.
Lessee, Lease, Description [Line Items]
Operating lease right-of-use asset	540		552
Accrued expenses and other liabilities
Lessee, Lease, Description [Line Items]
Operating lease liability	$ 557		$ 569
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accrued Liabilities		Accrued Liabilities
Property, plant and equipment, net.
Lessee, Lease, Description [Line Items]
Financing lease right-of-use asset	$ 65		$ 65
Debt
Lessee, Lease, Description [Line Items]
Financing lease liability	$ 82		$ 81