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Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Company contributions	$ 26.4us-gaap_DefinedBenefitPlanContributionsByEmployer	$ 20.6us-gaap_DefinedBenefitPlanContributionsByEmployer	$ 16.9us-gaap_DefinedBenefitPlanContributionsByEmployer
Deferred compensation plan amounts owed	$ 42.7us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent	$ 36.6us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent

X

- Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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