| Schedule of Unsecured Senior Notes [Table Text Block] |
The following summarizes the unsecured senior notes outstanding as of June 30, 2013 (dollars in thousands): | | | | | | | | | | | | | | Coupon/ Stated Rate | | Effective Rate(1) | | Principal Amount | | Maturity Date(2) | 12 Year Unsecured Senior Notes | 5.625 | % | | 5.693 | % | | $ | 300,000 |
| | April 15, 2015 | 12 Year Unsecured Senior Notes | 5.000 | % | | 5.194 | % | | 250,000 |
| | June 1, 2015 | 10 Year Unsecured Senior Notes | 5.875 | % | | 5.967 | % | | 700,000 |
| | October 15, 2019 | 10 Year Unsecured Senior Notes | 5.625 | % | | 5.708 | % | | 700,000 |
| | November 15, 2020 | 10 Year Unsecured Senior Notes | 4.125 | % | | 4.289 | % | | 850,000 |
| | May 15, 2021 | 7 Year Unsecured Senior Notes | 3.700 | % | | 3.853 | % | | 850,000 |
| | November 15, 2018 | 11 Year Unsecured Senior Notes | 3.850 | % | | 3.954 | % | | 1,000,000 |
| | February 1, 2023 | 10.5 Year Unsecured Senior Notes | 3.125 | % | | 3.279 | % | | 500,000 |
| | September 1, 2023 | 10.5 Year Unsecured Senior Notes | 3.800 | % | | 3.916 | % | | 700,000 |
| | February 1, 2024 | | | | | | | | | Total principal | | | | | 5,850,000 |
| | | Net unamortized discount | | | | | (15,027 | ) | | | Total | | | | | $ | 5,834,973 |
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_______________ | | (1) | Yield on issuance date including the effects of discounts on the notes and the amortization of financing costs. |
| | (2) | No principal amounts are due prior to maturity. |
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