3. Fair Value Measurements Contingent Consideration (Details) - USD ($) $ in Millions		12 Months Ended			51 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Jan. 06, 2016	Apr. 10, 2014	Sep. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value		$ 28.5			$ 28.5
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		(0.4)	$ (5.6)	$ (1.4)
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability	[1]	38.5	19.1		38.5
CellSorter [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value			9.1
Business Combination, Contingent Consideration, Liability		3.1			3.1			$ 44.6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements		3.5			28.9
Net (decrease) increase in estimated fair value of contingent consideration included in selling, general and administrative expense		(2.5)			(12.6)
Analytical Flow Cytometer Platform [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		25.4			25.4	$ 23.3
Net (decrease) increase in estimated fair value of contingent consideration included in selling, general and administrative expense		2.1
GnuBIO [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability		$ 10.0	$ 10.0		$ 10.0		$ 10.7
Discount rate [Member] | Analytical Flow Cytometer Platform [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate		10.00%
Sales milestone percentage of annual invoices [Member] | Analytical Flow Cytometer Platform [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Contingent Consideration, Potential Percentage Payout		39.00%			39.00%
Sales milestone percentage of annual invoices low [Member] | Analytical Flow Cytometer Platform [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Acquisition, Contingent Consideration, Potential Percentage Payout		20.00%			20.00%
Sales milestone minimum amount [Member] | Analytical Flow Cytometer Platform [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low		$ 0.0			$ 0.0
Cost of debt [Member] | Analytical Flow Cytometer Platform [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate		4.70%

[1] Contingent consideration liabilities are included in the following accounts in the Consolidated Balance Sheets (in millions):   December 31, 2016   December 31, 2015         Other current liabilities $ 14.5
  $ 13.5
Other long-term liabilities 24.0
  5.6
   Total $ 38.5
  $ 19.1