Employee Savings Plans

12 Months Ended

Dec. 31, 2020

Retirement Benefits [Abstract]

Employee Savings Plans

Employee Savings Plans

The Company maintains the Regeneron Pharmaceuticals, Inc. 401(k) Savings Plan, as amended and restated (the "Savings Plan"). The terms of the Savings Plan allow U.S. employees (as defined by the Savings Plan) to contribute to the Savings Plan a percentage of their compensation. In addition, the Company may make discretionary contributions ("Contribution"), as defined, to the accounts of participants under the Savings Plan. The Company recognized $44.7 million, $38.1 million, and $27.0 million of Contribution expense in 2020, 2019, and 2018, respectively.

The Company also maintains additional employee savings plans outside of the United States, which cover eligible employees. Expenses recognized by the Company related to contributions to such plans were not material during 2020, 2019, and 2018.