Credit Facility and Long-Term Debt	9 Months Ended
Credit Facility and Long-Term Debt	Sep. 27, 2013
Debt Disclosure [Abstract]
Credit Facility and Long-Term Debt	Credit Facility and Long-Term Debt Credit Facility On June 29, 2012, we entered into a five-year $250 million unsecured revolving credit facility (the "Facility"). Under certain circumstances, upon our request and with the consent of the lenders, the commitments under the Facility may be increased up to an additional $250 million. Borrowings under the Facility will bear interest at a base rate determined in accordance with the Facility, plus an applicable margin based upon the debt rating of our non-credit enhanced, senior unsecured long-term debt. In addition, we are obligated to pay a quarterly commitment fee, payable in arrears, based on the available commitments. This facility fee varies and is also determined based on our debt rating. The terms of the Facility require compliance with certain financial and non-financial covenants, which we have satisfied as of September 27, 2013. As of September 27, 2013, we have not borrowed any funds under the Facility. Long-term Debt On May 8, 2012, we completed a public offering of $500 million aggregate principal amount of 1.75% senior notes that will mature on May 15, 2017 (the "Notes") with an effective interest rate of 1.91%. Interest on the Notes is payable semiannually in arrears on May 15 and November 15 of each year, beginning on November 15, 2012. The Notes are governed by a base and supplemental indenture between Altera and U.S. Bank National Association, as trustee. The Notes are our unsecured and unsubordinated obligations, ranking equally in right of payment to all of our existing and future unsecured and unsubordinated indebtedness and senior in right of payment to any of our future indebtedness that is expressly subordinated to the Notes. We may redeem the Notes, in whole or in part, at any time and from time to time for cash at the redemption prices described in the indenture. We received net proceeds of $495.5 million from issuance of the Notes, after deduction of issuance costs of $3.7 million and a discount of $0.8 million. The debt issuance costs and discount are recorded in Other assets, net and are being amortized to interest expense over five years using the effective interest method. We used the net proceeds of the Notes to re-pay our former credit facility. The estimated fair value of Altera's long-term debt was approximately $497.5 million at September 27, 2013. Our long-term debt is classified within Level 1 of the fair value hierarchy and the estimated fair value of the debt is based on quoted market prices.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References+ Details