Acquisitions and Divestitures Divestitures (Details) $ in Millions	3 Months Ended			6 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets	$ 0.0		$ 19.4
Cost of sales
Income from discontinued operations, net of tax	147.8		4.5
Total current assets	0.0				$ 148.2
LIABILITIES
Total current liabilities	0.0				49.4
Devaluation of Venezuela balance sheet	0.0		7.5
NA Electronic Security [Member]
ASSETS
Cash and cash equivalents					(1.5)
Services	16.3		52.4
Proceeds from Divestiture of Businesses	$ 350.0
Divestiture Agreed Upon Contingent Payment	10.00%
Divestiture Proceeds From Contingent Payment	$ 35.0
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	149.1		0.0
Divestiture Credit For Transition Services	6.0
Divestiture Credit For Transition Services Quarterly Payment	5.0
Divestiture Credit For Transition Services Credit Against Payments	1.0
Divestiture Payment Of Quarterly Transition Services	1.3
Use of credit against payments, transition services	0.3
Products	8.5		28.3
Disposal Group, Including Discontinued Operation, Revenue	24.8		80.7
Cost of sales
Services	15.1		43.0
Products	6.9		21.7
Disposal Group, Including Discontinued Operations, Cost Of Goods And Services Sold	22.0		64.7
Gross profit	2.8		16.0
Selling and administrative expense	4.8		9.4
(Loss) income from discontinued operations before taxes	(2.0)		6.6
Income tax (benefit) expense	(0.7)		2.1
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	(1.3)		4.5
Gain on sale of discontinued operations before taxes	243.3		0.0
Income tax (benefit) expense	94.2		0.0
Income from discontinued operations, net of tax	$ 147.8		4.5
Trade receivables, less allowances for doubtful accounts of $4.0					75.6
Inventories					29.1
Prepaid expenses					0.9
Other current assets					5.0
Total current assets					109.1
Property, plant and equipment, net					5.2
Goodwill					33.9
Assets held for sale					148.2
LIABILITIES
Accounts payable					24.8
Deferred revenue					13.3
Payroll and other benefits liabilities					6.6
Other current liabilities					4.7
Total current liabilities					49.4
VENEZUELA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment of assets		$ 1.0	10.3	$ 9.3
LIABILITIES
Allowance for Doubtful Accounts Receivable, Write-offs					$ 0.4
Devaluation of Venezuela balance sheet			$ 7.5
SIMADI [Member]
LIABILITIES
Foreign Currency Exchange Rate			192.95
SICAD [Member]
LIABILITIES
Foreign Currency Exchange Rate						50.86