Basis of Presentation and New Accounting Standards (Policies)	3 Months Ended
Sep. 24, 2023
Accounting Policies [Abstract]
Overview	Overview Wolfspeed, Inc. (the Company) is an innovator of wide bandgap semiconductors, focused on silicon carbide and gallium nitride (GaN) materials and devices for power and radio-frequency (RF) applications. The Company’s product families include silicon carbide and GaN materials, power devices and RF devices targeted for various applications such as electric vehicles, fast charging, 5G, renewable energy and storage, and aerospace and defense. As discussed more fully below in Note 2, “Discontinued Operations,” on August 22, 2023, the Company entered into a definitive agreement to sell certain assets comprising its RF product line (the RF Business Divestiture). The RF Business Divestiture represents a strategic shift that will have a major effect on the Company's operations and financial results. As a result, the Company has classified the results and cash flows of the RF product line as discontinued operations in its consolidated statements of operations and consolidated statements of cash flows for all periods presented. Additionally, the related assets and liabilities associated with the transaction are classified as held for sale in the consolidated balance sheets. Unless otherwise noted, discussion within these notes to the consolidated financial statements relates to the Company's continuing operations. The Company’s continuing operations consist of power devices, which are used in electric vehicles, motor drives, power supplies, solar and transportation applications, and silicon carbide and GaN materials, which are targeted for customers who use them to manufacture products for RF, power and other applications. The majority of the Company's products are manufactured at production facilities located in North Carolina, New York and Arkansas for continuing operations and in California for discontinued operations. The Company also uses contract manufacturers for certain products and aspects of product fabrication, assembly and packaging for both continuing and discontinued operations. The Company operates research and development facilities in North Carolina, Arkansas and New York for continuing operations and in California and Arizona for discontinued operations. Wolfspeed, Inc. is a North Carolina corporation established in 1987, and its headquarters are in Durham, North Carolina.
Basis of Presentation	Basis of Presentation The consolidated financial statements presented herein have been prepared by the Company and have not been audited. In the opinion of management, all normal and recurring adjustments necessary to fairly state the consolidated financial position, results of operations, comprehensive loss, shareholders' equity and cash flows at September 24, 2023, and for all periods presented, have been made. All material intercompany accounts and transactions have been eliminated. The consolidated balance sheet at June 25, 2023 has been derived from the audited financial statements as of that date. Certain prior period amounts in the accompanying consolidated financial statements and notes have been reclassified to conform to the current year presentation. These reclassifications had no effect on previously reported net loss or shareholders’ equity. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for annual financial statements. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended June 25, 2023 (fiscal 2023). The results of operations for the three months ended September 24, 2023 are not necessarily indicative of the operating results that may be attained for the entire fiscal year ending June 30, 2024 (fiscal 2024).
Recently Adopted Accounting Pronouncements and Accounting Pronouncements Pending Adoption	Recently Adopted Accounting Pronouncements None. Accounting Pronouncements Pending Adoption None.
Fair Value of Financial Instruments	Under U.S. GAAP, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the exit price) in an orderly transaction between market participants at the measurement date. In determining fair value, the Company uses various valuation approaches, including quoted market prices and discounted cash flows. U.S. GAAP also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are obtained from independent sources and can be validated by a third party, whereas unobservable inputs reflect assumptions regarding what a third party would use in pricing an asset or liability. The fair value hierarchy is categorized into three levels based on the reliability of inputs as follows: •Level 1 - Valuations based on quoted prices in active markets for identical instruments that the Company is able to access. Because valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these products does not entail a significant degree of judgment. •Level 2 - Valuations based on quoted prices in active markets for instruments that are similar, or quoted prices in markets that are not active for identical or similar instruments, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. •Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement. The financial assets for which the Company performs recurring fair value remeasurements are cash equivalents and short-term investments. As of September 24, 2023 and June 25, 2023, financial assets utilizing Level 1 inputs included U.S. treasury securities and money market funds, and financial assets utilizing Level 2 inputs included municipal bonds, corporate bonds, U.S. agency securities, commercial paper, certificates of deposit and variable rate demand notes. Level 2 assets are valued based on quoted prices in active markets for instruments that are similar or using a third-party pricing service’s consensus price, which is a weighted average price based on multiple sources. These sources determine prices utilizing market income models which factor in, where applicable, transactions of similar assets in active markets, transactions of identical assets in infrequent markets, interest rates, bond or credit default swap spreads and volatility.

Basis of Presentation and New Accounting Standards (Policies)

3 Months Ended

Sep. 24, 2023

Wolfspeed, Inc. (the Company) is an innovator of wide bandgap semiconductors, focused on silicon carbide and gallium nitride (GaN) materials and devices for power and radio-frequency (RF) applications. The Company’s product families include silicon carbide and GaN materials, power devices and RF devices targeted for various applications such as electric vehicles, fast charging, 5G, renewable energy and storage, and aerospace and defense.

As discussed more fully below in Note 2, “Discontinued Operations,” on August 22, 2023, the Company entered into a definitive agreement to sell certain assets comprising its RF product line (the RF Business Divestiture).

The RF Business Divestiture represents a strategic shift that will have a major effect on the Company's operations and financial results. As a result, the Company has classified the results and cash flows of the RF product line as discontinued operations in its consolidated statements of operations and consolidated statements of cash flows for all periods presented. Additionally, the related assets and liabilities associated with the transaction are classified as held for sale in the consolidated balance sheets. Unless otherwise noted, discussion within these notes to the consolidated financial statements relates to the Company's continuing operations.

The Company’s continuing operations consist of power devices, which are used in electric vehicles, motor drives, power supplies, solar and transportation applications, and silicon carbide and GaN materials, which are targeted for customers who use them to manufacture products for RF, power and other applications.

The majority of the Company's products are manufactured at production facilities located in North Carolina, New York and Arkansas for continuing operations and in California for discontinued operations. The Company also uses contract manufacturers for certain products and aspects of product fabrication, assembly and packaging for both continuing and discontinued operations. The Company operates research and development facilities in North Carolina, Arkansas and New York for continuing operations and in California and Arizona for discontinued operations.

Wolfspeed, Inc. is a North Carolina corporation established in 1987, and its headquarters are in Durham, North Carolina.

Basis of Presentation

The consolidated financial statements presented herein have been prepared by the Company and have not been audited. In the opinion of management, all normal and recurring adjustments necessary to fairly state the consolidated financial position, results of operations, comprehensive loss, shareholders' equity and cash flows at September 24, 2023, and for all periods presented, have been made. All material intercompany accounts and transactions have been eliminated. The consolidated balance sheet at June 25, 2023 has been derived from the audited financial statements as of that date.

Certain prior period amounts in the accompanying consolidated financial statements and notes have been reclassified to conform to the current year presentation. These reclassifications had no effect on previously reported net loss or shareholders’ equity.

These financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim information and with the instructions to Form 10-Q and Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for annual financial statements. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended June 25, 2023 (fiscal 2023). The results of operations for the three months ended September 24, 2023 are not necessarily indicative of the operating results that may be attained for the entire fiscal year ending June 30, 2024 (fiscal 2024).

Recently Adopted Accounting Pronouncements and Accounting Pronouncements Pending Adoption

Recently Adopted Accounting Pronouncements

None.

Accounting Pronouncements Pending Adoption

None.

Fair Value of Financial Instruments

Under U.S. GAAP, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., the exit price) in an orderly transaction between market participants at the measurement date. In determining fair value, the Company uses various valuation approaches, including quoted market prices and discounted cash flows. U.S. GAAP also establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are obtained from independent sources and can be validated by a third party, whereas unobservable inputs reflect assumptions regarding what a third party would use in pricing an asset or liability. The fair value hierarchy is categorized into three levels based on the reliability of inputs as follows:

•Level 1 - Valuations based on quoted prices in active markets for identical instruments that the Company is able to access. Because valuations are based on quoted prices that are readily and regularly available in an active market, valuation of these products does not entail a significant degree of judgment.

•Level 2 - Valuations based on quoted prices in active markets for instruments that are similar, or quoted prices in markets that are not active for identical or similar instruments, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets.

•Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement.

The financial assets for which the Company performs recurring fair value remeasurements are cash equivalents and short-term investments. As of September 24, 2023 and June 25, 2023, financial assets utilizing Level 1 inputs included U.S. treasury securities and money market funds, and financial assets utilizing Level 2 inputs included municipal bonds, corporate bonds, U.S. agency securities, commercial paper, certificates of deposit and variable rate demand notes. Level 2 assets are valued based on quoted prices in active markets for instruments that are similar or using a third-party pricing service’s consensus price, which is a weighted average price based on multiple sources. These sources determine prices utilizing market income models which factor in, where applicable, transactions of similar assets in active markets, transactions of identical assets in infrequent markets, interest rates, bond or credit default swap spreads and volatility.