Variable interest entities - Schedule of carrying amount of assets and liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 6,341	$ 5,936	$ 5,783
Accounts receivable, net	4,507	4,300
Inventories	4,291	4,194
Other current assets	478	403
Total current assets	16,885	14,833
Property, plant and equipment, net	17,841	17,768
Goodwill	9,158	9,199	$ 9,451
Operating lease right-of-use assets, net	1,292	1,175
Other noncurrent assets	632	607
Total assets	47,469	45,319
Liabilities
Accounts payable	3,149	2,930
Accrued expenses	2,296	2,132
Current portion of long-term debt	1,759	1,397
Operating lease liabilities	255	238
Other current liabilities	2,072	1,250
Total current liabilities	10,013	8,041
Long-term debt	11,535	9,542
Deferred income tax liabilities	2,738	2,885
Noncurrent operating lease liabilities	1,125	1,000
Other noncurrent liabilities	2,196	2,208
Total liabilities	25,848	22,279
Variable Interest Entity, Primary Beneficiary
Assets
Cash and cash equivalents	19	34
Accounts receivable, net	31	34
Inventories	99	149
Other current assets	51	48
Total current assets	200	265
Property, plant and equipment, net	923	954
Goodwill	200	495
Operating lease right-of-use assets, net	5	6
Other noncurrent assets	11	7
Total assets	1,339	1,727
Liabilities
Accounts payable	92	118
Accrued expenses	36	48
Current portion of long-term debt	98	72
Operating lease liabilities	1	1
Other current liabilities	25	28
Total current liabilities	252	267
Long-term debt	297	347
Deferred income tax liabilities	106	108
Noncurrent operating lease liabilities	5	5
Other noncurrent liabilities	17	15
Total liabilities	$ 677	$ 742