v2.4.0.8

Debt (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 2.35% senior notes due September 2016 | Sep. 30, 2013 2.35% senior notes due September 2016 | Dec. 31, 2013 6.15% senior notes due February 2018 | Dec. 31, 2012 6.15% senior notes due February 2018 | Dec. 31, 2013 9.25% senior notes due January 2019 | Dec. 31, 2012 9.25% senior notes due January 2019 | Dec. 31, 2013 5.00% senior notes due September 2020 | Dec. 31, 2012 5.00% senior notes due September 2020 | Dec. 31, 2013 4.625% senior notes due September 2021 | Dec. 31, 2012 4.625% senior notes due September 2021 | Dec. 31, 2013 5.10% senior notes due September 2023 | Sep. 30, 2013 5.10% senior notes due September 2023 | Dec. 31, 2013 Revolving Credit Facility | Dec. 31, 2012 Revolving Credit Facility | Dec. 31, 2013 Commercial paper
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Long-term debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | $ 349,820 |  | $ 969,928 | $ 968,708 | $ 339,607 | $ 1,125,000 | $ 697,947 | $ 697,648 | $ 698,148 | $ 697,907 | $ 348,765 |  |  |  |
Revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 170,000 | 890,000 |
Other | 10,243 | 437 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt | 3,914,302 | 4,379,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 329,844
Current debt | 10,185 | 364 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 3,904,117 | $ 4,379,336 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate on senior notes due (as a percent) |  |  | 2.35% | 2.35% | 6.15% |  | 9.25% |  | 5.00% |  | 4.625% |  | 5.10% | 5.10% |  |  |

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