Business Segments (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Business segment information by geographical areas
Long-lived assets	$ 2,275,996	$ 2,335,421	$ 2,275,996	$ 2,335,421
Revenues	485,143	475,605	926,413	875,613
Income from continuing operations before income taxes and discontinued operations	275,783	200,812	249,035	101,669
Domestic
Business segment information by geographical areas
Long-lived assets	2,165,406	2,227,719	2,165,406	2,227,719
Revenues			841,922	786,726
Income from continuing operations before income taxes and discontinued operations			228,765	78,008
Foreign
Business segment information by geographical areas
Long-lived assets	110,590	107,702	110,590	107,702
Revenues			84,491	88,887
Income from continuing operations before income taxes and discontinued operations			$ 20,270	$ 23,661

Sum of operating profit, nonoperating income (expense), income (loss) from equity method investments, and reorganization items but before income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest.

No definition available.

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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