Variable interest entities - Schedule of carrying amount of assets and liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 4,096	$ 3,720	$ 6,341
Accounts receivable, net	5,178	4,820
Inventories	5,251	4,755
Other current assets	678	749
Total current assets	15,254	14,083
Property, plant and equipment, net	24,937	21,452
Goodwill	13,099	11,061	9,158
Intangible assets, net	2,048	1,211
Operating lease right-of-use assets, net	1,471	1,274
Other noncurrent assets	1,018	795
Total assets	58,329	50,613	47,469
Liabilities
Accounts payable	3,263	3,207
Accrued expenses	2,196	2,248
Current portion of long-term debt	1,055	2,882
Operating lease liabilities	286	265
Other current liabilities	1,834	1,577
Total current liabilities	8,754	10,296
Long-term debt	17,533	13,851
Deferred income tax liabilities	3,511	3,105
Noncurrent operating lease liabilities	1,232	1,074
Other noncurrent liabilities	2,876	2,319
Total liabilities	32,851	27,763	$ 25,848
Variable interest entity, primary beneficiary
Assets
Cash and cash equivalents	40	21
Accounts receivable, net	42	38
Inventories	81	96
Other current assets	39	58
Total current assets	202	213
Property, plant and equipment, net	793	846
Goodwill	187	190
Intangible assets, net	0	1
Operating lease right-of-use assets, net	4	5
Other noncurrent assets	9	9
Total assets	1,195	1,264
Liabilities
Accounts payable	119	106
Accrued expenses	33	44
Current portion of long-term debt	13	33
Operating lease liabilities	1	1
Other current liabilities	21	25
Total current liabilities	187	209
Long-term debt	377	345
Deferred income tax liabilities	89	94
Noncurrent operating lease liabilities	3	4
Other noncurrent liabilities	21	21
Total liabilities	$ 677	$ 673