Income Taxes (DTA and DTL) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax liabilities
Intangibles	$ 439	$ 450
Property, net	175	195
Right of use assets	238
LIFO inventory	89	37
Other	215	262
Total deferred tax liabilities	1,156	944
Deferred tax assets
U.S. general business credit carryforwards, including Energy Tax Credits	787	875
Lease liabilities	242
Pensions	66	144
Loss carryforwards	1,226	1,051
Postretirement obligations	145	99
Foreign tax credit carryforwards	39	0
Research and development capitalization	133	135
Employee payroll and benefits	96	98
Accrued expenses	93	154
Product warranty accrual	78	55
Receivable and inventory allowances	72	85
Other	574	536
Total deferred tax assets	3,551	3,232
Valuation allowances for deferred tax assets	(192)	(348)
Deferred tax assets, net of valuation allowances	3,359	2,884
Net deferred tax assets	$ 2,203	$ 1,940