Borrowing Arrangements	12 Months Ended
Jan. 31, 2013
Borrowing Arrangements	Borrowing Arrangements In December 2012, Autodesk issued $400.0 million aggregate principal amount of 1.95% senior notes due December 15, 2017 and $350.0 million aggregate principal amount of 3.6% senior notes due December 15, 2022, (collectively, the "Senior Notes"). Autodesk received net proceeds of $739.3 million from issuance of the Senior Notes, net of a discount of $4.5 million and issuance costs of $6.1 million. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the Senior Notes using the effective interest method. In the fourth quarter of fiscal 2013, Autodesk used a portion of the proceeds to re-pay the outstanding balance of the credit facility. The remaining proceeds from the Senior Notes are available for general corporate purposes. Autodesk may redeem the Senior Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the Senior Notes, at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The Senior Notes contain restrictive covenants that limit our ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of our assets, subject to significant qualifications and exceptions. Based on quoted market prices, the fair value of the Senior Notes was approximately $743.3 million as of January 31, 2013. During the fiscal year 2012, Autodesk entered into a credit agreement that provides for a $400.0 million unsecured revolving credit facility, with an option to request an increase in the amount of the credit facility by up to an additional $100.0 million. The credit agreement contains customary covenants that could restrict the imposition of liens on Autodesk's assets, and restrict the Company's ability to incur additional indebtedness or make dispositions of assets if Autodesk fails to maintain the financial covenants. During the fiscal year ended January 31, 2013, Autodesk borrowed $110.0 million under the credit facility, which was repaid in the fourth quarter of fiscal 2013 with a portion of the net proceeds from the sale of the Senior Notes. At January 31, 2013 and January 31, 2012, Autodesk had no outstanding borrowings on this line of credit, which expires in May 2016.

Borrowing Arrangements

12 Months Ended

Jan. 31, 2013

In December 2012, Autodesk issued $400.0 million aggregate principal amount of 1.95% senior notes due December 15, 2017 and $350.0 million aggregate principal amount of 3.6% senior notes due December 15, 2022, (collectively, the "Senior Notes"). Autodesk received net proceeds of $739.3 million from issuance of the Senior Notes, net of a discount of $4.5 million and issuance costs of $6.1 million. Both the discount and issuance costs are being amortized to interest expense over the respective terms of the Senior Notes using the effective interest method. In the fourth quarter of fiscal 2013, Autodesk used a portion of the proceeds to re-pay the outstanding balance of the credit facility. The remaining proceeds from the Senior Notes are available for general corporate purposes. Autodesk may redeem the Senior Notes at any time, subject to a make whole premium. In addition, upon the occurrence of certain change of control triggering events, Autodesk may be required to repurchase the Senior Notes, at a price equal to 101% of their principal amount, plus accrued and unpaid interest to the date of repurchase. The Senior Notes contain restrictive covenants that limit our ability to create certain liens, to enter into certain sale and leaseback transactions and to consolidate or merge with, or convey, transfer or lease all or substantially all of our assets, subject to significant qualifications and exceptions. Based on quoted market prices, the fair value of the Senior Notes was approximately $743.3 million as of January 31, 2013.

During the fiscal year 2012, Autodesk entered into a credit agreement that provides for a $400.0 million unsecured revolving credit facility, with an option to request an increase in the amount of the credit facility by up to an additional $100.0 million. The credit agreement contains customary covenants that could restrict the imposition of liens on Autodesk's assets, and restrict the Company's ability to incur additional indebtedness or make dispositions of assets if Autodesk fails to maintain the financial covenants. During the fiscal year ended January 31, 2013, Autodesk borrowed $110.0 million under the credit facility, which was repaid in the fourth quarter of fiscal 2013 with a portion of the net proceeds from the sale of the Senior Notes. At January 31, 2013 and January 31, 2012, Autodesk had no outstanding borrowings on this line of credit, which expires in May 2016.

- Definition

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.

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