Stock-Based Compensation - Stock-Based Compensation Cost (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Stock-based compensation cost, allocation of recognized costs
Pre-tax stock-based compensation cost	$ 498	$ 441	$ 1,004	$ 842
Income tax benefits	(146)	(156)	(353)	(350)
Net stock-based compensation cost	352	285	651	492
Income Statement Location [Axis]: us-gaap:CostOfRevenue
Stock-based compensation cost, allocation of recognized costs
Pre-tax stock-based compensation cost	73	67	149	132
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Stock-based compensation cost, allocation of recognized costs
Pre-tax stock-based compensation cost	198	130	358	249
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Stock-based compensation cost, allocation of recognized costs
Pre-tax stock-based compensation cost	$ 228	$ 244	$ 497	$ 461

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 2
-Subparagraph (h)(1)(i)
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Amount, after tax, of expense for award under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ References

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-Name Accounting Standards Codification
-Section 50
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-Subparagraph (h)(1)
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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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