Income Taxes Deferred Income Taxes (Details 4) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets (Table Amounts)
Retiree benefits	$ 117	$ 804
Deferred Tax Asset, R&E Expenditure Capitalization	1,671	0
Accrued employee compensation	378	371
Provisions for accrued liabilities	65	156
Inventory	484	649
Stock-based compensation	37	39
Operating lease liabilities	556	493
Tax credits	464	431
Other	144	135
Gross deferred tax assets	3,916	3,078
Less: valuation allowance	(428)	(349)
Net deferred tax assets	3,488	2,729
Deferred Tax Liabilities (Table Amounts)
Goodwill	534	533
Purchased intangibles	98	148
Property, plant and equipment, net	854	755
Operating lease right-of-use assets	545	444
Contract accounting differences	1,348	1,036
Other	79	103
Deferred tax liabilities	3,458	3,019
Total net deferred tax assets (liabilities)	$ 30	$ (290)