v2.4.0.6

Accounting Policies (Details 2) (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Nov. 15, 2011 3 7/8% Convertible Senior Notes due 2011 upon maturity | Nov. 30, 2011 3 7/8% Convertible Senior Notes due 2011 upon maturity | Nov. 30, 2011 Adoption of FASB guidance relating to convertible debt instruments that may be settled in cash upon conversion 3 7/8% Convertible Senior Notes due 2011 upon maturity | Dec. 31, 2011 Adjustment Adoption of FASB guidance relating to convertible debt instruments that may be settled in cash upon conversion | Dec. 31, 2010 Adjustment Adoption of FASB guidance relating to convertible debt instruments that may be settled in cash upon conversion
Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in net income on adoption of FASB guidance | $ (86,267,000) | $ (111,882,000) | $ (74,025,000) | $ (90,626,000) | $ (192,948,000) | $ (102,885,000) | $ (19,676,000) | $ (48,984,000) | $ (362,800,000) | $ (364,493,000) | $ (246,167,000) |  |  |  | $ (4,000,000) | $ (4,200,000)
Decrease in net income per diluted share on adoption of FASB guidance (in dollars per share) | $ (0.29) | $ (0.38) | $ (0.25) | $ (0.31) | $ (0.66) | $ (0.35) | $ (0.11) | $ (0.30) | $ (1.23) | $ (1.58) | $ (1.56) |  |  |  | $ (0.02) | $ (0.03)
Principal amount repaid |  |  |  |  |  |  |  |  |  |  |  | $ 230,000,000 |  | $ 230,000,000 |  |
Aggregate shares of common stock issued for the conversion value in excess of the principal amount |  |  |  |  |  |  |  |  |  |  |  | 943,714 | 943,714 | 943,714 |  |

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