Acquisitions, Divestitures and Other Transactions - Purchase Price Allocation (Details) - USD ($) $ in Millions		9 Months Ended
	Mar. 17, 2026	Sep. 30, 2026	Dec. 31, 2025	Dec. 31, 2024
Acquisitions
Goodwill		$ 74,916	$ 67,717	$ 60,706
2026 Acquisitions | Client relationships | Minimum
Acquisitions
Amortization Life (in years)		7 years
2026 Acquisitions | Client relationships | Maximum
Acquisitions
Amortization Life (in years)		12 years
2026 Acquisitions | Completed technology | Minimum
Acquisitions
Amortization Life (in years)		5 years
2026 Acquisitions | Completed technology | Maximum
Acquisitions
Amortization Life (in years)		7 years
2026 Acquisitions | Trademarks | Minimum
Acquisitions
Amortization Life (in years)		1 year
2026 Acquisitions | Trademarks | Maximum
Acquisitions
Amortization Life (in years)		5 years
Confluent, Inc. (Confluent)
Acquisitions
Current assets		$ 2,405
Property, plant and equipment/noncurrent assets		93
Goodwill		7,247
Total assets acquired		13,578
Current liabilities		1,723
Noncurrent liabilities		253
Total liabilities assumed		1,976
Total purchase price		11,602
Amortization Life (in years)	9 years 8 months 12 days
Cash and cash equivalents	$ 1,165
Short-term marketable securities	$ 917
Short-term debt acquired		1,100
Confluent, Inc. (Confluent) | Client relationships
Acquisitions
Intangible assets		2,122
Confluent, Inc. (Confluent) | Completed technology
Acquisitions
Intangible assets		1,590
Confluent, Inc. (Confluent) | Trademarks
Acquisitions
Intangible assets		122
Other 2026 Acquisitions
Acquisitions
Current assets		342
Property, plant and equipment/noncurrent assets		195
Goodwill		319
Total assets acquired		1,179
Current liabilities		91
Noncurrent liabilities		90
Total liabilities assumed		181
Total purchase price		$ 998
Amortization Life (in years)		6 years 9 months 18 days
Other 2026 Acquisitions | Client relationships
Acquisitions
Intangible assets		$ 40
Other 2026 Acquisitions | Completed technology
Acquisitions
Intangible assets		281
Other 2026 Acquisitions | Trademarks
Acquisitions
Intangible assets		$ 3