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Employee Benefit Plans (Details 2)
$ in Millions

12 Months Ended

Dec. 31, 2015

USD ($)

$ / item

Dec. 31, 2014

USD ($)

Dec. 31, 2013

USD ($)

Short-term investments

Employee benefit plans

Value of short-term investments (in dollars per unit) | $ / item

1.00

Pension plans

Employee benefit plans

Fair value of plan assets

$ 442.7

$ 492.4

Pension plans | Fixed income common trust funds

Employee benefit plans

Fair value of plan assets

^[1]

163.4

178.2

Transfers from Level 1 to Level 2

44.8

48.5

Pension plans | Corporate bonds

Employee benefit plans

Fair value of plan assets

36.0

36.5

Pension plans | Non-U.S. Government securities

Employee benefit plans

Fair value of plan assets

27.4

12.0

Pension plans | U.S. Government securities

Employee benefit plans

Fair value of plan assets

8.8

28.5

Pension plans | Global equity common trust funds

Employee benefit plans

Fair value of plan assets

^[2]

89.0

162.8

Pension plans | Global equity securities: Finance

Employee benefit plans

Fair value of plan assets

2.1

Pension plans | Global equity securities: Capital equipment

Employee benefit plans

Fair value of plan assets

1.9

Pension plans | Global equity securities: Consumer goods

Employee benefit plans

Fair value of plan assets

1.7

Pension plans | Global equity securities: Materials

Employee benefit plans

Fair value of plan assets

1.6

Pension plans | Global equity securities: Services

Employee benefit plans

Fair value of plan assets

0.8

Pension plans | Global equity securities: Energy

Employee benefit plans

Fair value of plan assets

0.2

Pension plans | Miscellaneous

Employee benefit plans

Fair value of plan assets

4.6

Pension plans | Commingled global fund allocation

Employee benefit plans

Fair value of plan assets

^[3]

45.4

36.3

Pension plans | Short-term investments

Employee benefit plans

Fair value of plan assets

^[4]

71.7

19.7

Pension plans | Other

Employee benefit plans

Fair value of plan assets

^[5]

1.0

5.5

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans

Employee benefit plans

Fair value of plan assets

63.8

122.0

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Fixed income common trust funds

Employee benefit plans

Fair value of plan assets

^[1]

13.2

15.1

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds

Employee benefit plans

Fair value of plan assets

0.0

36.5

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Non-U.S. Government securities

Employee benefit plans

Fair value of plan assets

0.0

12.0

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Government securities

Employee benefit plans

Fair value of plan assets

0.0

0.0

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity common trust funds

Employee benefit plans

Fair value of plan assets

^[2]

13.6

15.0

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity securities: Finance

Employee benefit plans

Fair value of plan assets

2.1

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity securities: Capital equipment

Employee benefit plans

Fair value of plan assets

1.9

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity securities: Consumer goods

Employee benefit plans

Fair value of plan assets

1.7

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity securities: Materials

Employee benefit plans

Fair value of plan assets

1.6

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity securities: Services

Employee benefit plans

Fair value of plan assets

0.8

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Global equity securities: Energy

Employee benefit plans

Fair value of plan assets

0.2

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Miscellaneous

Employee benefit plans

Fair value of plan assets

4.6

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Commingled global fund allocation

Employee benefit plans

Fair value of plan assets

^[3]

22.8

10.5

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Short-term investments

Employee benefit plans

Fair value of plan assets

^[4]

14.2

19.7

Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Other

Employee benefit plans

Fair value of plan assets

^[5]

0.0

0.3

Significant Observable Inputs (Level 2) | Securities collateralized

Employee benefit plans

Fair value of plan assets

5.5

7.0

Significant Observable Inputs (Level 2) | Pension plans

Employee benefit plans

Fair value of plan assets

377.9

360.3

Significant Observable Inputs (Level 2) | Pension plans | Fixed income common trust funds

Employee benefit plans

Fair value of plan assets

^[1]

150.2

163.1

Significant Observable Inputs (Level 2) | Pension plans | Corporate bonds

Employee benefit plans

Fair value of plan assets

36.0

0.0

Significant Observable Inputs (Level 2) | Pension plans | Non-U.S. Government securities

Employee benefit plans

Fair value of plan assets

27.4

0.0

Significant Observable Inputs (Level 2) | Pension plans | U.S. Government securities

Employee benefit plans

Fair value of plan assets

8.8

28.5

Significant Observable Inputs (Level 2) | Pension plans | Global equity common trust funds

Employee benefit plans

Fair value of plan assets

^[2]

75.4

142.9

Significant Observable Inputs (Level 2) | Pension plans | Global equity securities: Finance

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Global equity securities: Capital equipment

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Global equity securities: Consumer goods

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Global equity securities: Materials

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Global equity securities: Services

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Global equity securities: Energy

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Miscellaneous

Employee benefit plans

Fair value of plan assets

0.0

Significant Observable Inputs (Level 2) | Pension plans | Commingled global fund allocation

Employee benefit plans

Fair value of plan assets

^[3]

22.6

25.8

Significant Observable Inputs (Level 2) | Pension plans | Short-term investments

Employee benefit plans

Fair value of plan assets

^[4]

57.5

0.0

Significant Observable Inputs (Level 2) | Pension plans | Other

Employee benefit plans

Fair value of plan assets

^[5]

0.0

0.0

Significant Unobservable Inputs (Level 3)

Employee benefit plans

Fair value of plan assets

1.0

10.1

$ 13.2

Significant Unobservable Inputs (Level 3) | Fixed income common trust funds

Employee benefit plans

Fair value of plan assets

0.0

0.0

0.0

Significant Unobservable Inputs (Level 3) | Global equity common trust funds

Employee benefit plans

Fair value of plan assets

0.0

4.9

6.8

Significant Unobservable Inputs (Level 3) | Commingled global fund allocation

Employee benefit plans

Fair value of plan assets

0.0

0.0

0.0

Significant Unobservable Inputs (Level 3) | Other

Employee benefit plans

Fair value of plan assets

1.0

5.2

$ 6.4

Significant Unobservable Inputs (Level 3) | Pension plans

Employee benefit plans

Fair value of plan assets

1.0

10.1

Significant Unobservable Inputs (Level 3) | Pension plans | Fixed income common trust funds

Employee benefit plans

Fair value of plan assets

^[1]

0.0

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Corporate bonds

Employee benefit plans

Fair value of plan assets

0.0

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Non-U.S. Government securities

Employee benefit plans

Fair value of plan assets

0.0

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | U.S. Government securities

Employee benefit plans

Fair value of plan assets

0.0

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity common trust funds

Employee benefit plans

Fair value of plan assets

^[2]

0.0

4.9

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity securities: Finance

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity securities: Capital equipment

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity securities: Consumer goods

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity securities: Materials

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity securities: Services

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Global equity securities: Energy

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Miscellaneous

Employee benefit plans

Fair value of plan assets

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Commingled global fund allocation

Employee benefit plans

Fair value of plan assets

^[3]

0.0

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Short-term investments

Employee benefit plans

Fair value of plan assets

^[4]

0.0

0.0

Significant Unobservable Inputs (Level 3) | Pension plans | Other

Employee benefit plans

Fair value of plan assets

^[5]

$ 1.0

$ 5.2

[1]	This class represents investments in actively managed common trust funds that invest in a variety of fixed income investments, which may include corporate bonds, both U.S. and non-U.S. municipal securities, interest rate swaps, options and futures. The funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date. The investments are valued based on yields currently available for comparable securities of issuers with similar credit ratings. The Level of the fund(s) (Level 1, 2 or 3) is determined based on the classification of the significant holdings within the fund.
[2]	This class represents investments in actively managed common trust funds that invest primarily in equity securities, which may include common stocks, options and futures. The funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date. The investments are valued based on market values and yields currently available for comparable securities of issuers with similar credit ratings. The Level of the fund(s) (Level 1, 2 or 3) is determined based on the classification of the significant holdings within the fund.
[3]	This class represents investments in actively managed common trust funds with investments in both equity and debt securities. The investments may include common stock, corporate bonds, U.S. and non-U.S. municipal securities, interest rate swaps, options and futures. The funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date. The investments are valued based on market values and yields currently available for comparable securities of issuers with similar credit ratings. The Level of the fund(s) (Level 1, 2 or 3) is determined based on the classification of the significant holdings within the fund.
[4]	Short-term investments are valued at $1.00/unit, which approximates fair value. Amounts are generally invested in actively managed common trust funds or interest-bearing accounts.
[5]	This category represents investments in insurance contracts, private equity and publicly traded real estate investment trusts. The insurance contracts and private equity investments are valued using unobservable inputs from the fund manager, primarily based on discounted cash flows models.

X

- Definition

Represents the per unit value of the investment.

+ References

No definition available.

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X

- Definition

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+ References

No definition available.

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X

- 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=29635418&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=35743120&loc=d3e1928-114920

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X

- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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