Pensions and Postretirement Benefits (Summary of Pension Plan Weighted-Average Asset Allocation) (Details)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Summary of pension plan weighted-average asset allocation/summary of reconciliation of level 3 assets
Weighted-average asset allocations	100.00%	100.00%
Target allocation	100.00%
Equity securities
Summary of pension plan weighted-average asset allocation/summary of reconciliation of level 3 assets
Target allocation, minimum	45.00%
Target allocation, maximum	75.00%
Weighted-average asset allocations	64.60%	67.20%
Debt securities
Summary of pension plan weighted-average asset allocation/summary of reconciliation of level 3 assets
Target allocation, minimum	10.00%
Target allocation, maximum	40.00%
Weighted-average asset allocations	27.90%	25.40%
Other
Summary of pension plan weighted-average asset allocation/summary of reconciliation of level 3 assets
Target allocation, minimum	0.00%
Target allocation, maximum	20.00%
Weighted-average asset allocations	7.50%	7.40%

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Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ 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 (d)(i)

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920

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Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

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Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(1)

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

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