Reconciliation of assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Reconciliation of Assets
Assets	$ 82,276	$ 82,793
Intersegment Eliminations
Reconciliation of Assets
Inventory Methodology Difference	(2,901)	(2,656)
Intersegment Eliminations | Cash and Short Term Investments
Reconciliation of Assets
Assets	5,662	8,428
Intersegment Eliminations | Deferred Income Taxes
Reconciliation of Assets
Assets	1,862	1,735
Intersegment Eliminations | Goodwill and Intangible Assets
Reconciliation of Assets
Assets	4,842	4,859
Intersegment Eliminations | Property Plant and Equipment-Net and Other Assets
Reconciliation of Assets
Assets	3,149	4,056
Intersegment Eliminations | Liabilities Included in Segment Assets
Reconciliation of Assets
Assets	11,378	10,777
Intersegment Eliminations | Other
Reconciliation of Assets
Assets	392	(706)
Operating Segments | Reportable Segments
Reconciliation of Assets
Assets	55,324	54,622
Operating Segments | Reportable Segments | Construction Industries
Reconciliation of Assets
Assets	5,019	4,547
Operating Segments | Reportable Segments | Resource Industries
Reconciliation of Assets
Assets	5,717	5,962
Operating Segments | Reportable Segments | Energy & Transportation
Reconciliation of Assets
Assets	9,480	9,253
Operating Segments | Reportable Segments | Financial Products Segment
Reconciliation of Assets
Assets	35,108	34,860
Operating Segments | All Other operating segments
Reconciliation of Assets
Assets	$ 2,568	$ 1,678