Notes Payable	9 Months Ended
Sep. 30, 2011
Notes Payable [Abstract]
Notes Payable	Note 5 – Notes Payable: In June 2011, NNN filed a prospectus supplement to the prospectus contained in its February 2009 shelf registration statement and issued $300,000,000 of principal amount 5.50% Notes due July 2021 ("2021 Notes") which closed in July 2011. The 2021 Notes were sold at a discount at an aggregate purchase price of $295,731,000 with interest payable semi-annually commencing on January 15, 2012. The discount of $4,269,000 is being amortized to interest expense over the term of the note using the effective interest method. The effective interest rate after note discount is 5.69%. In connection with the debt offering, NNN previously entered into two interest rate hedges with a total notional amount of $150,000,000. Upon issuance of the 2021 Notes, NNN terminated the interest rate hedge agreements resulting in a liability of $5,300,000, of which $5,218,000 was deferred in other comprehensive income. The deferred liability is being amortized over the term of the note using the effective interest method. The 2021 Notes are senior unsecured obligations of NNN and are subordinated to all secured indebtedness and to the indebtedness and other liabilities of NNN's subsidiaries. Additionally, the 2021 Notes are redeemable at NNN's option, in whole or part anytime, for an amount equal to (i)the sum of the outstanding principal balance of the notes being redeemed plus accrued interest thereon to the redemption date, and (ii) the make whole amount, if any, as defined in the supplemental indenture dated July 6, 2011, relating to the 2021 Notes. NNN received $292,956,000 of proceeds in connection with the issuance of the 2021 Notes, net of debt issuance cost totaling $2,775,000 consisting primarily of underwriting discounts and commissions, legal and accounting fees and rating agency fees. In September 2011, pursuant to the terms of the 3.95% Convertible Senior Notes due 2026 ("2026 Notes"), the holders of the 2026 Notes had the option to surrender all or a portion of the 2026 Notes to NNN in exchange for cash at par value ("Put Option"). At the expiration of the Put Option on September 19, 2011, none of the 2026 Notes were surrendered and therefore none of the 2026 Notes were purchased by NNN pursuant to the Put Option. The next Put Option for the holders of the 2026 Notes is September 2016.

Notes Payable

9 Months Ended

Sep. 30, 2011

Note 5 – Notes Payable:

In June 2011, NNN filed a prospectus supplement to the prospectus contained in its February 2009 shelf registration statement and issued $300,000,000 of principal amount 5.50% Notes due July 2021 ("2021 Notes") which closed in July 2011. The 2021 Notes were sold at a discount at an aggregate purchase price of $295,731,000 with interest payable semi-annually commencing on January 15, 2012. The discount of $4,269,000 is being amortized to interest expense over the term of the note using the effective interest method. The effective interest rate after note discount is 5.69%. In connection with the debt offering, NNN previously entered into two interest rate hedges with a total notional amount of $150,000,000. Upon issuance of the 2021 Notes, NNN terminated the interest rate hedge agreements resulting in a liability of $5,300,000, of which $5,218,000 was deferred in other comprehensive income. The deferred liability is being amortized over the term of the note using the effective interest method.

The 2021 Notes are senior unsecured obligations of NNN and are subordinated to all secured indebtedness and to the indebtedness and other liabilities of NNN's subsidiaries. Additionally, the 2021 Notes are redeemable at NNN's option, in whole or part anytime, for an amount equal to (i)the sum of the outstanding principal balance of the notes being redeemed plus accrued interest thereon to the redemption date, and (ii) the make whole amount, if any, as defined in the supplemental indenture dated July 6, 2011, relating to the 2021 Notes.

NNN received $292,956,000 of proceeds in connection with the issuance of the 2021 Notes, net of debt issuance cost totaling $2,775,000 consisting primarily of underwriting discounts and commissions, legal and accounting fees and rating agency fees.

In September 2011, pursuant to the terms of the 3.95% Convertible Senior Notes due 2026 ("2026 Notes"), the holders of the 2026 Notes had the option to surrender all or a portion of the 2026 Notes to NNN in exchange for cash at par value ("Put Option"). At the expiration of the Put Option on September 19, 2011, none of the 2026 Notes were surrendered and therefore none of the 2026 Notes were purchased by NNN pursuant to the Put Option. The next Put Option for the holders of the 2026 Notes is September 2016.