Business Combinations - Narrative (Details) $ / shares in Units, $ in Millions		2 Months Ended	12 Months Ended
	Nov. 07, 2025 USD ($) shares	Dec. 31, 2025 USD ($) $ / shares	Dec. 31, 2025 USD ($) $ / shares	Dec. 31, 2024 USD ($) acquisition
Business Combination [Line Items]
Number of businesses acquired | acquisition				1
Acquisition related costs			$ 2.3	$ 0.5
American Well Intermediate Holdings, LLC Acquisition | American Well Services, LLC
Business Combination [Line Items]
Subsidiary, ownership percentage, parent	100.00%
American Well Intermediate Holdings, LLC
Business Combination [Line Items]
Ownership (as a percent)	100.00%
Goodwill	$ 0.0
Consideration transferred	88.6
Working capital adjustment	3.0
Fair value of contingent consideration	2.3
Maximum contingent consideration liability	$ 5.0
Revenue from acquiree		$ 26.7
Net income		$ 3.9
Acquisition related costs			$ 2.0
American Well Intermediate Holdings, LLC | Shares, Class A Common Stock
Business Combination [Line Items]
Shares issued as consideration (in shares) | shares	1,998,401
Business combination, price (in dollar per share) | $ / shares		$ 13.75	$ 13.75
American Well Intermediate Holdings, LLC Acquisition
Business Combination [Line Items]
Fair value of receivable	$ 26.1
Gross contractual amount	26.2
Estimated uncollectible	$ 0.1