CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Consolidated net income	$ 81.8	$ 78.2	$ 94.0
Adjustments to reconcile consolidated net income to cash flows from operating activities:
Depreciation and amortization	61.3	59.1	52.9
Write down of demonstration inventories to net realizable value	32.7	31.5	30.0
Impairment of assets		23.8
Stock-based compensation expense	6.6	7.8	7.9
Deferred income taxes	7.4	(11.7)	(4.8)
Gain on disposal of product line	(0.9)	(2.2)
Other non-cash expenses, net	2.1	4.9	1.2
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(19.3)	1.6	(52.8)
Inventories	5.7	(49.5)	(103.3)
Accounts payable and accrued expenses	7.0	4.6	23.4
Income taxes payable	(33.7)	(2.4)	(0.8)
Deferred revenue	4.6	(4.4)	17.4
Customer advances	(12.1)	(4.6)	31.3
Other changes in operating assets and liabilities, net	1.8	(3.6)	(8.7)
Net cash provided by operating activities	145.0	133.1	87.7
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(11.6)	(27.0)	(14.3)
Disposal of product line	0.5	3.3
Purchases of property, plant and equipment	(50.3)	(72.8)	(61.6)
Sales of property, plant and equipment	1.4	3.3	7.2
Net cash used in investing activities	(60.0)	(93.2)	(68.7)
Cash flows from financing activities:
Repayments of revolving lines of credit		(216.5)
Proceeds from revolving lines of credit	19.5	93.0	30.7
Proceeds from Note Purchase Agreement		240.0
Repayment of other debt, net	(1.6)	(83.2)	(29.3)
Payment of deferred financing costs		(1.4)	(1.3)
Proceeds from issuance of common stock, net	8.2	4.5	3.3
Excess tax benefit related to exercise of stock awards			0.2
Changes in restricted cash	1.0	(1.4)	0.1
Cash payments to noncontrolling interests	(0.6)	(0.6)	(0.4)
Net cash provided by financing activities	26.5	34.4	3.3
Effect of exchange rate changes on cash and cash equivalents	16.6	(9.7)	(6.7)
Net change in cash and cash equivalents	128.1	64.6	15.6
Cash and cash equivalents at beginning of year	310.6	246.0	230.4
Cash and cash equivalents at end of year	438.7	310.6	246.0
Supplemental disclosure of cash flow information:
Cash paid for interest	12.7	10.1	6.7
Cash paid for taxes	84.3	79.9	69.7
Non-cash financing activities:
Issuance of common stock in connection with acquisition of Michrom Bioresources Inc.			$ 2.9