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Recently Issued Accounting Pronouncements	12 Months Ended
	Dec. 31, 2020
Recently Issued Accounting Pronouncements	C.    RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS In August 2020, the FASB issued ASU 2020-06—“Debt—Debt with Conversion and Other Options and Derivatives and Hedging—Contracts in Entity’s Own Equity,” which simplifies the accounting for convertible debt instruments by reducing the number of accounting models and the number of embedded conversion features that could be recognized separately from the primary contract. This ASU requires a convertible debt instrument to be accounted for as a single liability measured at its amortized cost, as long as no other features require bifurcation and recognition as derivatives. This ASU requires an entity to use the if-converted method in the diluted earnings per share calculation for convertible instruments. This ASU will be effective for Teradyne on January 1, 2022, with early adoption permitted beginning on January 1, 2021. This ASU permits the use of either the modified retrospective or fully retrospective method of transition. Teradyne is evaluating the timing and effects of the adoption of this ASU on its financial statements.

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- Definition

The entire disclosure for a new accounting pronouncement that has been issued but not yet adopted.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-URI http://asc.fasb.org/topic&trid=2122394

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