| Schedule of Debt [Table Text Block] |
Debt as of September 30, 2013 and December 31, 2012 was as follows: | | | | | | | | | | September 30, 2013 | | December 31, 2012 | | (In thousands) | 7.875% Debentures due February 2013 | $ | — |
| | $ | 4,757 |
| 6.75% Senior Notes due April 2015 | 136,465 |
| | 136,465 |
| 6.75% Senior Notes due April 2016 | 197,377 |
| | 197,377 |
| 7.0% Senior Notes due June 2017 | 295,000 |
| | 295,000 |
| 7.625% Senior Notes due October 2018 | 250,000 |
| | 250,000 |
| 7.0% Senior Notes due May 2019 | 250,000 |
| | 250,000 |
| 4.5% Senior Notes due November 2020 | 200,000 |
| | 200,000 |
| 8.0% Senior Notes due November 2021 | 150,000 |
| | 150,000 |
| 5.375% Senior Notes due January 2022 | 425,000 |
| | — |
| 7.5% Senior Notes due April 2027 | 200,000 |
| | 200,000 |
| Bank credit facility | — |
| | 86,600 |
| Obligations under capital leases | 189,011 |
| | 176,445 |
| Mortgage notes and other debt, maturities through 2047 | 4,711 |
| | 5,698 |
| Unamortized pricing discounts and other | (3,814 | ) | | (4,292 | ) | Total debt | 2,293,750 |
| | 1,948,050 |
| Less current maturities | (36,647 | ) | | (31,429 | ) | Total long-term debt | $ | 2,257,103 |
| | $ | 1,916,621 |
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