| Schedule Of Carrying Amount Of Convertible Senior Notes |
The following table summarizes the carrying amount of our borrowings under various financing arrangements (in thousands): | | | | | | | | | | | | | Type of Borrowing | Description | Issue Date | Due Date | Interest Rate | March 31,
2012 | | December 31,
2011 | Convertible Senior | May 2013 Notes | April 2006 | May 2013 | 0.625% | $ | 614,791 |
| | $ | 607,036 |
| Convertible Senior | May 2014 Notes | July 2010 | May 2014 | 1.00% | 1,188,594 |
| | 1,181,525 |
| Convertible Senior | May 2016 Notes | July 2010 | May 2016 | 1.625% | 1,138,538 |
| | 1,132,293 |
| Senior Unsecured | April 2021 Notes
| March 2011 | April 2021 | 4.50% | 992,280 |
| | 992,066 |
| Senior Unsecured | December 2014 Notes
| December 2011 | December 2014 | 2.40% | 749,157 |
| | 749,078 |
| Senior Unsecured | December 2016 Notes
| December 2011 | December 2016 | 3.05% | 698,921 |
| | 698,864 |
| Senior Unsecured | December 2021 Notes | December 2011 | December 2021 | 4.40% | 1,247,212 |
| | 1,247,138 |
| Senior Unsecured | December 2041 Notes
| December 2011 | December 2041 | 5.65% | 997,753 |
| | 997,734 |
| Term Loan Facility | Term Loan | January 2012 | January 2015 | Variable | 650,000 |
| | — |
| Credit Facility | Short-Term Revolver | January 2012 | January 2013 | Variable | 400,000 |
| | — |
| Credit Facility | Five-Year Revolver | January 2012 | January 2017 | Variable | 750,000 |
| | — |
| Total debt, net | | | | | $ | 9,427,246 |
| | $ | 7,605,734 |
| Less current portion | | | | | 1,350,000 |
| | — |
| Total long-term debt, net | | | | | $ | 8,077,246 |
| | $ | 7,605,734 |
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