Employee Benefit Plans (Summary of Estimated Future Benefit Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	$ 17,737
Defined Benefit Plan, Expected Future Benefit Payments, Rolling Year Two	20,544
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	22,503
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	24,086
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	22,943
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	130,088
DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal	237,901
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	3,665
Defined Benefit Plan, Expected Future Benefit Payments, Rolling Year Two	3,657
Defined Benefit Plan, Expected Future Benefit Payments, Year Three	3,551
Defined Benefit Plan, Expected Future Benefit Payments, Year Four	3,486
Defined Benefit Plan, Expected Future Benefit Payments, Year Five	3,421
Defined Benefit Plan, Expected Future Benefit Payments, Five Fiscal Years Thereafter	14,680
DefinedBenefitPlanExpectedFutureBenefitPaymentsTotal	$ 32,460

Defined benefit plan expected future benefit payments total

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ 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 (f)

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

+ Details

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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