Investment in Master Trust - Fully Benefit-Responsive investment Contracts (Details) - Puerto Rico Group Savings Plan - USD ($) |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Investment in Master Trust | ||
| Average crediting rate for the investment contracts | 3.39% | 3.39% |
| Redemption notice period (in years) | 1 year | |
| Sanofi U.S. Group Savings Master Trust | ||
| Investment in Master Trust | ||
| Stable value fund | $ 487,868,228 | $ 489,852,592 |
| Sanofi U.S. Group Savings Master Trust | Cash reserves common trust fund | ||
| Investment in Master Trust | ||
| Stable value fund | 14,800,092 | 12,219,011 |
| Sanofi U.S. Group Savings Master Trust | Synthetic investment contracts | ||
| Investment in Master Trust | ||
| Stable value fund | $ 473,068,136 | $ 477,633,581 |
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- Definition Represents the average crediting rate for fully benefit-responsive investment contracts. No definition available.
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- Definition Represents the redemption notice period for No definition available.
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- Definition Contract value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, insurance contract meeting fully benefit-responsive investment criteria. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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