Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Accruals not currently deductible
Employee benefit costs	$ 169	$ 187
Product and other claims	280	228
Miscellaneous accruals	119	113
Pension costs	824	643
Stock-based compensation	218	203
Net operating/capital loss/tax credit carryforwards	150	71
Foreign tax credits	66
Inventory	70	54
Other	113	24
Gross deferred tax assets	2,009	1,523
Valuation allowance	(158)	(67)
Total deferred tax assets	1,851	1,456
Deferred tax liabilities:
Product and other insurance receivables		(7)
Accelerated depreciation	(580)	(521)
Intangible amortization	(1,021)	(799)
Currency translation	(30)	(35)
Other		(8)
Total deferred tax liabilities	(1,631)	(1,370)
Net deferred tax assets	$ 220	$ 86