3. Fair Value Measurements 3. Contingent Consideration (Details) (USD $)			9 Months Ended			9 Months Ended					9 Months Ended							9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 CellSorter [Member]	Sep. 30, 2014 GnuBIO [Member]	Apr. 10, 2014 GnuBIO [Member]	Sep. 30, 2014 probability lower [Member] GnuBIO [Member]	Sep. 30, 2014 Discount Rate Lower [Member] GnuBIO [Member]	Sep. 30, 2014 Sales milestone minimum payment [Member] CellSorter [Member]	Sep. 30, 2014 Sales milestone year 2 maximum payment percentage [Member] CellSorter [Member]	Sep. 30, 2014 Sales milestone year 3 maximum payment percentage [Member] CellSorter [Member]	Sep. 30, 2014 Credit Adjusted Discount Rates Lower [Member] CellSorter [Member]	Sep. 30, 2014 Credit Adjusted Discount Rate Higher [Member] CellSorter [Member]	Sep. 30, 2014 Market Price of Risk [Member] CellSorter [Member]	Sep. 30, 2014 Projected Volatility of Growth Rate [Member] CellSorter [Member]	Sep. 30, 2014 Probability Higher [Member] GnuBIO [Member]	Sep. 30, 2014 Sales milestone year 2 bookings [Member] CellSorter [Member]	Sep. 30, 2014 Sales milestone year 3 bookings [Member] CellSorter [Member]	Sep. 30, 2014 Discount Rate Higher [Member] GnuBIO [Member]	Sep. 30, 2014 probability lower1 [Member] GnuBIO [Member]	Sep. 30, 2014 Probability Higher 1 [Member] GnuBIO [Member]	Sep. 30, 2014 Discount Rate Lower 1 [Member] GnuBIO [Member]	Sep. 30, 2014 Discount Rate Higher 1 [Member] GnuBIO [Member]	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member]		Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]		Sep. 30, 2014 Other Noncurrent Liabilities [Member] Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]	Dec. 31, 2013 Other Noncurrent Liabilities [Member] Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]	Sep. 30, 2014 Other Current Liabilities [Member] Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]	Dec. 31, 2013 Other Current Liabilities [Member] Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [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	$ 23,100,000	$ 20,800,000																					$ 23,100,000	[1]	$ 20,800,000	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 13,500,000	$ 14,700,000	$ 9,600,000	$ 6,100,000
Contingent consideration milestone payments			(2,400,000)
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low								0
(Decrease) increase in fair value of contingent consideration included in SGA			(4,900,000)	(3,500,000)
Business Combination, Contingent Consideration, Liability			15,900,000	7,200,000	10,700,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances				10,700,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High					$ 70,000,000											$ 30,000,000	$ 45,000,000
Business Acquisition, Contingent Consideration, Potential Percentage Payout									51.32%	50.38%
Contingent Consideration Level 3 Inputs						.50	.0010				0.0082	0.0129	0.019	0.2	.281			.0054	.0000089	0	.0098	.0222

[1] Contingent consideration liability is included in the following accounts in the Condensed Consolidated Balance Sheets (in millions): September 30, 2014 December 31, 2013Other current liabilities$9.6 $6.1Other long-term liabilities13.5 14.7 Total$23.1 $20.8