Supplemental financial information - Other Long-Term Assets (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Disclosure Text Block Supplement [Abstract]
CHIPS Act incentives	$ 1,734	$ 2,246
Other	1,107	1,102
Total	$ 2,841	$ 3,348

Amount of asset from government assistance, classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483507/832-10-50-3

Name:	us-gaap_GovernmentAssistanceAmountCumulativeNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant