Fair Value Measurements (Fair Value of Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Jul. 01, 2016	Dec. 31, 2015
Liabilities
Contingent consideration (See Note 3)	$ 18.8		$ 19.6
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.0
Contingent consideration (See Note 3)	0.0		0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Designated cash flow hedges
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Demand and time deposits
Assets
Cash and cash equivalents	66.2		9.5
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Money market funds
Assets
Cash and cash equivalents	51.4		33.2
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.1
Contingent consideration (See Note 3)	0.0		0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Designated cash flow hedges
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.2
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Demand and time deposits
Assets
Cash and cash equivalents	0.0		0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds
Assets
Cash and cash equivalents	0.0		0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.0
Contingent consideration (See Note 3)	3.7		5.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Designated cash flow hedges
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Demand and time deposits
Assets
Cash and cash equivalents	0.0		0.0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Money market funds
Assets
Cash and cash equivalents	0.0		0.0
Fair Value, Measurements, Recurring | Estimate of Fair Value
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.1
Contingent consideration (See Note 3)	3.7	$ 5.0	5.0
Fair Value, Measurements, Recurring | Estimate of Fair Value | Designated cash flow hedges
Liabilities
Foreign currency exchange contracts/Designated cash flow hedges			0.2
Fair Value, Measurements, Recurring | Estimate of Fair Value | Demand and time deposits
Assets
Cash and cash equivalents	66.2		9.5
Fair Value, Measurements, Recurring | Estimate of Fair Value | Money market funds
Assets
Cash and cash equivalents	$ 51.4		$ 33.2