Segment Information (Details 1) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Segments, Geographical Areas
United States Revenue	$ 422,045	$ 319,239	$ 1,105,316	$ 886,354
Other Countries Revenue	143,297	116,114	384,813	338,366
Total revenues	565,342	435,353	1,490,129	1,224,720
United States Long-lived assets	977,260		977,260		881,416
Other Countries Long-lived assets	463,592		463,592		431,734
Total, net	$ 1,440,852		$ 1,440,852		$ 1,313,150

Amount of 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, located in the entity's country of domicile.

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Revenues from external customers attributed to the entity's country of domicile.

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Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues.

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Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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