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Retirement Benefits - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($)
Compensation and Retirement Disclosure [Abstract]
Pension contributions	$ 1.6
Estimated future employer contributions in current fiscal year	$ 2.1

X

- References

No definition available.

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- Definition

Amount of the employer's best estimate of contributions expected to be paid to the plan in the current fiscal period.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 715



-SubTopic 20



-Section 50



-Paragraph 6



-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2709-114920

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- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 45



-Paragraph 25



-Subparagraph (g)



-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

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