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BALANCE SHEET DETAILS AND OTHER FINANCIAL INFORMATION - Accounts Receivable, Net (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Trade accounts receivable, net	$ 1,120.0	$ 1,117.2
Unbilled accounts receivable and other	164.6	138.7
Sales returns and allowances	(24.9)	(30.5)
Accounts receivable, net	$ 1,259.7	$ 1,225.4

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- Definition

Sales Returns and Allowances

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Trade Accounts Receivable, Current

+ References

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Balance Type:	debit
Period Type:	instant

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- Definition

Unbilled Receivables and Other Receivables, Current

+ References

No definition available.

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Namespace Prefix:	isrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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