Goodwill - Summary of Goodwill by Reportable Segment (Detail) $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($)
Goodwill
Beginning balance	$ 16,616
Business combinations	442
Impact of foreign currency fluctuations and other	(158)
Ending balance	16,900
Commercial Solutions
Goodwill
Beginning balance	12,987
Business combinations	236
Impact of foreign currency fluctuations and other	(142)
Ending balance	13,081
Research & Development Solutions
Goodwill
Beginning balance	3,629
Business combinations	206
Impact of foreign currency fluctuations and other	(16)
Ending balance	$ 3,819

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details