Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Insurance and employee benefits	$ 1,126	$ 1,831
Inventory and contract balances	639	756
Warranty provisions	242	248
Capitalization of research and experimental expenditures	1,712	0
Other asset basis differences	828	878
Tax loss carryforwards	305	251
Tax credit carryforwards	970	1,088
Deferred Tax Assets, Valuation Allowance	(842)	(825)
Future Income Tax Benefits	4,980	4,227
Deferred Tax Liabilities Intangible Assets	6,588	7,168
Fixed assets	1,751	1,746
Other items, net	220	323
Future Income Taxes Payable	$ 8,559	$ 9,237