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Equity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Increase Decrease In Stockholders Equity Roll Forward |  |  |  |
Total stockholders' equity |  |  | $ 3,134,041 |
Noncontrolling interest |  |  | 115,743 |
Total equity |  |  | 3,249,784 | $ 2,855,902
Net loss attributable to noncontrolling interest | $ (7,754) | $ (779) | (11,282) | (1,302)
Net income (loss) | (237,358) | 53,327 | (546,803) | 109,466
Other comprehensive income | 678 | 340 | 1,857 | 1,007
Dividends declared on preferred stocks |  |  | (342) | (342)
Dividends declared on common stock |  |  | (71,078) | (68,025)
Stock-based compensation |  |  | 1,107 | 2,796
Issuance of common stock upon vesting of performance shares, net of shares used for tax withholdings |  |  |  | (5,564)
Excess tax benefit (net tax deficit) on stock-based compensation |  |  | (1,632) | 4,729
Issuance of common stock |  |  | 14,499 | 131,973
Contribution from noncontrolling interest |  |  | 39,500 | 32,500
Total stockholders' equity | 2,542,931 | 3,000,506 | 2,542,931 | 3,000,506
Noncontrolling interest | 143,961 | 63,936 | 143,961 | 63,936
Total equity | 2,686,892 | 3,064,442 | 2,686,892 | 3,064,442
Total stockholders’ equity [Member] |  |  |  |
Increase Decrease In Stockholders Equity Roll Forward |  |  |  |
Total stockholders' equity |  |  | 3,134,041 | 2,823,164
Net income (loss) attributable to parent |  |  | (535,521) | 110,768
Other comprehensive income |  |  | 1,857 | 1,007
Dividends declared on preferred stocks |  |  | (342) | (342)
Dividends declared on common stock |  |  | (71,078) | (68,025)
Stock-based compensation |  |  | 1,107 | 2,796
Issuance of common stock upon vesting of performance shares, net of shares used for tax withholdings |  |  |  | (5,564)
Excess tax benefit (net tax deficit) on stock-based compensation |  |  | (1,632) | 4,729
Issuance of common stock |  |  | 14,499 | 131,973
Contribution from noncontrolling interest |  |  | 0 | 0
Total stockholders' equity | 2,542,931 | 3,000,506 | 2,542,931 | 3,000,506
Noncontrolling interest [Member] |  |  |  |
Increase Decrease In Stockholders Equity Roll Forward |  |  |  |
Noncontrolling interest |  |  | 115,743 | 32,738
Net loss attributable to noncontrolling interest |  |  | (11,282) | (1,302)
Other comprehensive income |  |  | 0 | 0
Dividends declared on preferred stocks |  |  | 0 | 0
Dividends declared on common stock |  |  | 0 | 0
Stock-based compensation |  |  | 0 | 0
Issuance of common stock upon vesting of performance shares, net of shares used for tax withholdings |  |  |  | 0
Excess tax benefit (net tax deficit) on stock-based compensation |  |  | 0 | 0
Issuance of common stock |  |  | 0 | 0
Contribution from noncontrolling interest |  |  | 39,500 | 32,500
Noncontrolling interest | $ 143,961 | $ 63,936 | $ 143,961 | $ 63,936

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