Senior Notes	6 Months Ended
Mar. 31, 2012
Senior Notes	7. Senior Notes In May 2008, we issued $275 million of Senior Notes in a private placement to a group of institutional investors. The Senior Notes were issued in four series with maturities ranging from 5 to 10 years. The Senior Notes’ weighted average interest rate is 6.8% and the weighted average maturity is 7.9 years. In July 2010, we issued $245 million of Senior Notes in a private placement to a group of institutional investors. The Senior Notes were issued in four series with maturities ranging from 5 to 10 years. The Senior Notes’ weighted average interest rate is 5.2% and the weighted average maturity is 8.0 years. These Senior Notes require interest payments semi-annually and also include certain restrictive covenants. As of March 31, 2012, we were in compliance with all financial covenants which include the maintenance of consolidated net debt to consolidated EBITDA and a fixed charge coverage ratio. The issuance of these Senior Notes also required us to make certain covenants typical of unsecured facilities. The carrying value of our Senior Notes was $512.0 million as of March 31, 2012 and September 30, 2011. The fair value of our Senior Notes was $517.3 million and $572.5 million as of March 31, 2012 and September 30, 2011, respectively.

7. Senior Notes

In May 2008, we issued $275 million of Senior Notes in a private placement to a group of institutional investors. The Senior Notes were issued in four series with maturities ranging from 5 to 10 years. The Senior Notes’ weighted average interest rate is 6.8% and the weighted average maturity is 7.9 years. In July 2010, we issued $245 million of Senior Notes in a private placement to a group of institutional investors. The Senior Notes were issued in four series with maturities ranging from 5 to 10 years. The Senior Notes’ weighted average interest rate is 5.2% and the weighted average maturity is 8.0 years. These Senior Notes require interest payments semi-annually and also include certain restrictive covenants. As of March 31, 2012, we were in compliance with all financial covenants which include the maintenance of consolidated net debt to consolidated EBITDA and a fixed charge coverage ratio. The issuance of these Senior Notes also required us to make certain covenants typical of unsecured facilities. The carrying value of our Senior Notes was $512.0 million as of March 31, 2012 and September 30, 2011. The fair value of our Senior Notes was $517.3 million and $572.5 million as of March 31, 2012 and September 30, 2011, respectively.