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Quarterly Financial Information (Unaudited) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2010
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Sep. 30, 2010
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Jun. 30, 2010
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Mar. 31, 2010
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Quarterly Financial Information (Unaudited) | |||||||||||
| Revenues | $ 571,401 | $ 562,528 | $ 362,630 | $ 268,432 | $ 265,965 | $ 262,636 | $ 241,291 | $ 238,859 | $ 1,764,991 | $ 1,008,751 | $ 923,465 |
| Income from continuing operations attributable to common stockholders | 193,216 | 102,470 | 18,906 | 48,218 | 56,141 | 56,563 | 51,451 | 51,169 | 362,810 | 215,324 | 190,423 |
| Discontinued operations | (268) | 415 | 770 | 766 | 21,442 | 1,335 | 6,616 | 1,450 | 1,683 | 30,843 | 76,072 |
| Net income (loss) attributable to common stockholders | $ 192,948 | $ 102,885 | $ 19,676 | $ 48,984 | $ 77,583 | $ 57,898 | $ 58,067 | $ 52,619 | $ 364,493 | $ 246,167 | $ 266,495 |
| Basic: | |||||||||||
| Income from continuing operations attributable to common stockholders (in dollars per share) | $ 0.67 | $ 0.36 | $ 0.11 | $ 0.30 | $ 0.36 | $ 0.36 | $ 0.33 | $ 0.33 | $ 1.59 | $ 1.37 | $ 1.25 |
| Discontinued operations (in dollars per share) | $ 0.00 | $ 0.00 | $ 0.00 | $ 0.01 | $ 0.13 | $ 0.01 | $ 0.04 | $ 0.01 | $ 0.01 | $ 0.20 | $ 0.50 |
| Net income attributable to common stockholders (in dollars per share) | $ 0.67 | $ 0.36 | $ 0.11 | $ 0.31 | $ 0.49 | $ 0.37 | $ 0.37 | $ 0.34 | $ 1.60 | $ 1.57 | $ 1.75 |
| Diluted: | |||||||||||
| Income from continuing operations attributable to common stockholders (in dollars per share) | $ 0.66 | $ 0.35 | $ 0.11 | $ 0.30 | $ 0.35 | $ 0.36 | $ 0.33 | $ 0.33 | $ 1.57 | $ 1.36 | $ 1.24 |
| Discontinued operations (in dollars per share) | $ 0.00 | $ 0.00 | $ 0.00 | $ 0.00 | $ 0.14 | $ 0.01 | $ 0.04 | $ 0.01 | $ 0.01 | $ 0.20 | $ 0.50 |
| Net income attributable to common stockholders (in dollars per share) | $ 0.66 | $ 0.35 | $ 0.11 | $ 0.30 | $ 0.49 | $ 0.37 | $ 0.37 | $ 0.34 | $ 1.58 | $ 1.56 | $ 1.74 |
| Dividends declared per common share (in dollars per share) | $ 0.5750 | $ 0.4486 | $ 0.7014 | $ 0.575 | $ 0.535 | $ 0.535 | $ 0.535 | $ 0.535 | $ 2.30000 | $ 2.14000 | $ 2.0500 |
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- Definition
Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) derived from discontinued operations during the period, net of related tax effect, per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income or loss derived from discontinued operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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