Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

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 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&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)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

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=58740216&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=58740216&loc=d3e1928-114920

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- Details

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Employee Retirement Plans (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	100.00%
Fair Value Measurement	$ 422.8	$ 434.5	$ 399.2
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	1.8	4.8
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	421.0	429.7
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	$ 0.0	0.0
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Actual Allocation	0.00%
Fair Value Measurement	$ 1.8	4.8
Cash and cash equivalents \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	1.8	4.8
Cash and cash equivalents \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	0.0	0.0
Cash and cash equivalents \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	$ 0.0	0.0
Liability hedging portfolio
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	50.00%
Actual Allocation	49.00%
Growth portfolio
Defined Benefit Plan Disclosure [Line Items]
Target Allocation	50.00%
Actual Allocation	51.00%
Debt common trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	$ 273.9	275.0
Debt common trust funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	0.0	0.0
Debt common trust funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	273.9	275.0
Debt common trust funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	0.0	0.0
Equity common trust funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	147.1	154.7
Equity common trust funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	0.0	0.0
Equity common trust funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	147.1	154.7
Equity common trust funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair Value Measurement	$ 0.0	$ 0.0