Segment information - Reconciliations of depreciation and amortization (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Depreciation and amortization:
Depreciation and amortization	$ 2,153	$ 2,144	$ 2,219
Operating Segments
Reconciliation of Depreciation and amortization:
Depreciation and amortization	1,811	1,805	1,880
Operating Segments | Construction Industries
Reconciliation of Depreciation and amortization:
Depreciation and amortization	233	221	231
Operating Segments | Resource Industries
Reconciliation of Depreciation and amortization:
Depreciation and amortization	260	302	368
Operating Segments | Energy & Transportation
Reconciliation of Depreciation and amortization:
Depreciation and amortization	578	551	547
Operating Segments | Financial Products Segment
Reconciliation of Depreciation and amortization:
Depreciation and amortization	740	731	734
Operating Segments | Other Operating Segment
Reconciliation of Depreciation and amortization:
Depreciation and amortization	254	236	229
Corporate Items and Eliminations
Items not included in segment depreciation and amortization:
Cost centers	95	91	84
Other	$ (7)	$ 12	$ 26