Acquisitions & Divestitures - Purchase Price Allocation (Details) - USD ($) $ in Millions		9 Months Ended
	Feb. 27, 2025	Sep. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Acquisitions
Goodwill		$ 67,396	$ 60,706	$ 60,178
2025 Acquisitions | Client relationships | Minimum
Acquisitions
Weighted average useful life		5 years
2025 Acquisitions | Client relationships | Maximum
Acquisitions
Weighted average useful life		13 years
2025 Acquisitions | Completed technology | Minimum
Acquisitions
Weighted average useful life		5 years
2025 Acquisitions | Completed technology | Maximum
Acquisitions
Weighted average useful life		7 years
2025 Acquisitions | Trademarks | Minimum
Acquisitions
Weighted average useful life		2 years
2025 Acquisitions | Trademarks | Maximum
Acquisitions
Weighted average useful life		7 years
HashiCorp, Inc. (HashiCorp)
Acquisitions
Current assets		$ 1,451
Property, plant and equipment/noncurrent assets		457
Goodwill		4,683
Total assets acquired		8,426
Current liabilities		478
Noncurrent liabilities		515
Total liabilities assumed		993
Total purchase price		7,433
Weighted average useful life	9 years 9 months 18 days
Cash and cash equivalents	$ 929
Short-term marketable securities	$ 331
HashiCorp, Inc. (HashiCorp) | Client relationships
Acquisitions
Intangible assets		980
HashiCorp, Inc. (HashiCorp) | Completed technology
Acquisitions
Intangible assets		770
HashiCorp, Inc. (HashiCorp) | Trademarks
Acquisitions
Intangible assets		85
Other Acquisitions
Acquisitions
Current assets		151
Property, plant and equipment/noncurrent assets		100
Goodwill		950
Total assets acquired		1,694
Current liabilities		174
Noncurrent liabilities		71
Total liabilities assumed		245
Total purchase price		$ 1,450
Weighted average useful life		6 years 7 months 6 days
Other Acquisitions | Client relationships
Acquisitions
Intangible assets		$ 296
Other Acquisitions | Completed technology
Acquisitions
Intangible assets		191
Other Acquisitions | Trademarks
Acquisitions
Intangible assets		$ 8