Employee Benefit Plans (Details 3) - Significant Unobservable Inputs (Level 3) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Changes in the fair value of Level 3 assets
Fair value of plan assets — beginning of year	$ 10.1	$ 13.2
Unrealized gains (losses) relating to instruments still held at period end		0.2
Transfers from Level 3 to Level 2 assets	(4.9)
Sales	(0.1)	(3.3)
Fair value of plan assets — end of year	1.0	10.1
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff \| SPX Flow, Inc
Changes in the fair value of Level 3 assets
Spin-Off of SPX FLOW	(4.1)
Global equity common trust funds
Changes in the fair value of Level 3 assets
Fair value of plan assets — beginning of year	4.9	6.8
Unrealized gains (losses) relating to instruments still held at period end		0.2
Transfers from Level 3 to Level 2 assets	(4.9)
Sales	0.0	(2.1)
Fair value of plan assets — end of year	0.0	4.9
Global equity common trust funds \| Discontinued Operations, Disposed of by Means Other than Sale, Spinoff \| SPX Flow, Inc
Changes in the fair value of Level 3 assets
Spin-Off of SPX FLOW	0.0
Commingled global fund allocation
Changes in the fair value of Level 3 assets
Fair value of plan assets — beginning of year	0.0	0.0
Unrealized gains (losses) relating to instruments still held at period end		0.0
Transfers from Level 3 to Level 2 assets	0.0
Sales	0.0	0.0
Fair value of plan assets — end of year	0.0	0.0
Commingled global fund allocation \| Discontinued Operations, Disposed of by Means Other than Sale, Spinoff \| SPX Flow, Inc
Changes in the fair value of Level 3 assets
Spin-Off of SPX FLOW	0.0
Fixed income common trust funds
Changes in the fair value of Level 3 assets
Fair value of plan assets — beginning of year	0.0	0.0
Unrealized gains (losses) relating to instruments still held at period end		0.0
Transfers from Level 3 to Level 2 assets	0.0
Sales	0.0	0.0
Fair value of plan assets — end of year	0.0	0.0
Fixed income common trust funds \| Discontinued Operations, Disposed of by Means Other than Sale, Spinoff \| SPX Flow, Inc
Changes in the fair value of Level 3 assets
Spin-Off of SPX FLOW	0.0
Other
Changes in the fair value of Level 3 assets
Fair value of plan assets — beginning of year	5.2	6.4
Unrealized gains (losses) relating to instruments still held at period end		0.0
Transfers from Level 3 to Level 2 assets	0.0
Sales	(0.1)	(1.2)
Fair value of plan assets — end of year	1.0	$ 5.2
Other \| Discontinued Operations, Disposed of by Means Other than Sale, Spinoff \| SPX Flow, Inc
Changes in the fair value of Level 3 assets
Spin-Off of SPX FLOW	$ (4.1)

The decrease in plan assets attributed to the sale of investments.

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- Definition

Actual return on plan assets, separately identifying the amount related to assets still held at the reporting 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 (d)(iv)(02)(A)
-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)(iv)(02)(A)
-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

The amount of decrease in the plan assets attributed to the sale, liquidation, spin-off or other divestiture of a corporate division or subsidiary.

+ References

+ Details

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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=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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- Definition

Transfers in and out of Level 3. For example, transfers due to changes in the observability of significant inputs.

+ 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)(iv)(02)(C)
-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)(iv)(02)(C)
-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920

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