Income Taxes (Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Balance at January 1	$ 80,527us-gaap_UnrecognizedTaxBenefits	$ 76,080us-gaap_UnrecognizedTaxBenefits	$ 115,293us-gaap_UnrecognizedTaxBenefits
Increases related to prior year tax positions	2,141	6,755	453
Decreases related to prior year tax positions	(423)	(1,025)	(27)
Decreases as a result of statute expirations	(3,043)	(1,283)	(61,021)
Decreases as a result of tax settlements	(869)		(8,184)
Increases related to current year tax positions			29,566
Balance at December 31	$ 78,333us-gaap_UnrecognizedTaxBenefits	$ 80,527us-gaap_UnrecognizedTaxBenefits	$ 76,080us-gaap_UnrecognizedTaxBenefits

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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