Reconciliations of depreciation and amortization (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Reconciliation of Depreciation and amortization
Depreciation and amortization	$ 557	$ 586
Operating Segments | Reportable Segments
Reconciliation of Depreciation and amortization
Depreciation and amortization	472	496
Operating Segments | Reportable Segments | Construction Industries
Reconciliation of Depreciation and amortization
Depreciation and amortization	58	59
Operating Segments | Reportable Segments | Resource Industries
Reconciliation of Depreciation and amortization
Depreciation and amortization	92	99
Operating Segments | Reportable Segments | Energy & Transportation
Reconciliation of Depreciation and amortization
Depreciation and amortization	134	142
Operating Segments | Reportable Segments | Financial Products Segment
Reconciliation of Depreciation and amortization
Depreciation and amortization	188	196
Intersegment Eliminations | All Other operating segments
Reconciliation of Depreciation and amortization
Depreciation and amortization	58	62
Intersegment Eliminations | Cost Centers
Reconciliation of Depreciation and amortization
Depreciation and amortization	21	26
Intersegment Eliminations | Other
Reconciliation of Depreciation and amortization
Depreciation and amortization	$ 6	$ 2