Defined Contribution Plan Employee Eligibility Age

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- Definition

Minimum Service Period Of Employees To Avail Benefit Under Defined Contribution Benefit Plan

+ References

No definition available.

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- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503844

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (e)

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

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- Definition

The amount of employer securities or securities of parties related to the employer that are included in plan assets.

+ References

+ Details

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(3)

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

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- Definition

The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

+ 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 (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 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

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- Definition

Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.

+ References

No definition available.

+ Details

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- Definition

The number of employer shares or related party shares included in plan assets.

+ References

+ Details

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ References

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- Definition

Target allocation maximum percentage 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)

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-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

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- Definition

Target allocation minimum percentage 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

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-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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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

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- Definition

Amount of contributions made to the multiemployer plan by all employers who participate in the plan. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 80

-Section 50

-Paragraph 7

-Subparagraph (c)

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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Pensions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Contributions to certain multiemployer pension plans	$ 0.2	$ 0.2	$ 0.3
Purchases of common stock	10.3	0	0
Amortization of actuarial loss	7.2
Cost of defined contribution pension plans	7.1	7.0	6.3
Cash dividends paid to stockholders	5.6us-gaap_PaymentsOfDividendsCommonStock	0us-gaap_PaymentsOfDividendsCommonStock	0us-gaap_PaymentsOfDividendsCommonStock
Defined Benefit Postretirement Health Coverage
Defined Benefit Plan Disclosure [Line Items]
Eligible age for pension plan benefits	60 years
Minimum service period to be eligible for pension plan benefits	15 years
Accumulated postretirement benefit liabilities	0.5	0.5
Federal Signal common stock
Defined Benefit Plan Disclosure [Line Items]
Equity securities, common stock (shares)	0.2	0.9
Equity securities, common stock	3.6	13.6
U.S. Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Purchases of common stock	10.3
Funded status	52.3	29.9
Expected contribution to defined benefit plan	7.8
Accumulated postretirement benefit liabilities	184.4	157.3
Cash dividends paid to stockholders	0.1
U.S. Benefit Plans \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Minimum target allocation	45.00%
Maximum target allocation	75.00%
U.S. Benefit Plans \| Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Minimum target allocation	15.00%
Maximum target allocation	45.00%
U.S. Benefit Plans \| Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum target allocation	0.00%
Maximum target allocation	20.00%
U.S. Benefit Plans \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Weighted-average target return of pension plans	7.80%
Non-U.S. Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Funded status	4.6	(1.4)
Expected contribution to defined benefit plan	1.1
Accumulated postretirement benefit liabilities	63.1	60.4
Non-U.S. Benefit Plan \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Minimum target allocation	50.00%
Maximum target allocation	70.00%
Non-U.S. Benefit Plan \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum target allocation	30.00%
Maximum target allocation	50.00%
Foreign benefit plan underfunded [Member]
Defined Benefit Plan Disclosure [Line Items]
Funded status		$ 1.1