| Earnings Per Share [Text Block] |
Net Income (Loss) Per Share Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding, while diluted net income (loss) per share is computed by dividing net income (loss) attributable to common shareholders by the sum of the weighted average number of common shares outstanding and all dilutive potential common shares outstanding. Dilutive potential common shares relate to our stock-based compensation arrangements and our outstanding convertible senior notes. For all calculations, the determination of whether potential common shares are dilutive or anti-dilutive is based on net income (loss) from continuing operations. The calculation of the basic and diluted net income (loss) per share was as follows: | | | | | | | | | | | | | | Year Ended December 31, | | 2015 | | 2014 | | 2013 | (In thousands, except share and per-share amounts) | | | | | | Net income (loss) from continuing operations: | | | | | | Net income (loss) from continuing operations - basic | $ | 281,539 |
| | $ | 1,259,574 |
| | $ | (141,851 | ) | Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1) | 14,758 |
| | 14,372 |
| | — |
| Net income (loss) from continuing operations - diluted | $ | 296,297 |
| | $ | 1,273,946 |
| | $ | (141,851 | ) | | | | | | | Net income (loss): | | | | | | Net income (loss) from continuing operations - basic | $ | 281,539 |
| | $ | 1,259,574 |
| | $ | (141,851 | ) | Income (loss) from discontinued operations, net of tax | 5,385 |
| | (300,057 | ) | | (55,134 | ) | Net income (loss) - basic | 286,924 |
| | 959,517 |
| | (196,985 | ) | Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1) | 14,758 |
| | 14,372 |
| | — |
| Net income (loss) - diluted | $ | 301,682 |
| | $ | 973,889 |
| | $ | (196,985 | ) | | | | | | | Average common shares outstanding-basic | 199,910 |
| | 184,551 |
| | 166,366 |
| Dilutive effect of Convertible Senior Notes due 2017 | 6,293 |
| | 8,465 |
| | — |
| Dilutive effect of Convertible Senior Notes due 2019 | 37,736 |
| | 37,736 |
| | — |
| Dilutive effect of stock-based compensation arrangements (2) | 2,393 |
| | 3,150 |
| | — |
| Adjusted average common shares outstanding—diluted | 246,332 |
| | 233,902 |
| | 166,366 |
| | | | | | | Net income (loss) per share: | | | | | | | | | | | | Basic: | | | | | | Net income (loss) from continuing operations | $ | 1.41 |
| | $ | 6.83 |
| | $ | (0.85 | ) | Income (loss) from discontinued operations | 0.03 |
| | (1.63 | ) | | (0.33 | ) | Net income (loss) | $ | 1.44 |
| | $ | 5.20 |
| | $ | (1.18 | ) | | | | | | | Diluted: | | | | | | Net income (loss) from continuing operations | $ | 1.20 |
| | $ | 5.44 |
| | $ | (0.85 | ) | Income (loss) from discontinued operations | 0.02 |
| | (1.28 | ) | | (0.33 | ) | Net income (loss) | $ | 1.22 |
| | $ | 4.16 |
| | $ | (1.18 | ) | | | | | | |
________________ | | (1) | As applicable, includes coupon interest, amortization of discount and fees, and other changes in income or loss that would result from the assumed conversion. |
| | (2) | The following number of shares of our common stock equivalents issued under our stock-based compensation arrangements were not included in the calculation of net income (loss) per share because they were anti-dilutive: |
| | | | | | | | | | | Year Ended December 31, | (in thousands) | 2015 | | 2014 | | 2013 | Shares of common stock equivalents | 728 |
| | 542 |
| | 43,288 |
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