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Restructuring (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 0.4				$ 0.4	$ 0.0	$ 0.0
Restructuring Charges	$ 0.1	$ 0.3	$ 1.2	$ 0.4	1.7	0.4	$ 0.0
Payments for Restructuring					(1.3)	(0.4)
Operating Segments [Member] | Safety And Security Systems [Member] | Voluntary Reduction-In-Force Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs					$ 1.7	$ 0.4

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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-Publisher FASB
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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+ References

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