CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Consolidated net income	$ 64.9	$ 54.4
Adjustments to reconcile consolidated net income to cash flows from operating activities:
Depreciation and amortization	42.5	39.3
Amortization of deferred financing costs	0.5	0.4
Write-down of demonstration inventories to net realizable value	22.6	22.0
Stock-based compensation	5.9	5.8
Deferred income taxes	(0.3)	(1.6)
Gain on disposal of business	(2.2)
Other non-cash expense	1.6	1.1
Changes in operating assets and liabilities:
Accounts receivable	25.2	(38.5)
Inventories	(72.9)	(106.2)
Accounts payable and accrued expenses	(11.0)	18.3
Income taxes payable	(10.6)	(6.1)
Deferred revenue	(7.6)	5.0
Customer advances	(2.8)	7.5
Other changes in operating assets and liabilities, net	(13.6)	(5.8)
Net cash provided by (used in) operating activities	42.2	(4.4)
Cash flows from investing activities:
Acquisitions, net of cash acquired	(21.7)	(1.3)
Disposal of business	3.3
Purchases of property, plant and equipment	(49.8)	(43.1)
Sales of property, plant and equipment	2.5	4.7
Net cash used in investing activities	(65.7)	(39.7)
Cash flows from financing activities:
(Repayments) proceeds of revolving lines of credit	(161.5)	31.0
Proceeds from Note Purchase Agreement	240.0
Repayment of other debt, net	(45.4)	(21.5)
Payment of deferred financing costs	(1.4)	(1.3)
Proceeds from issuance of common stock, net	3.6	3.1
Changes in restricted cash	(1.5)	(0.4)
Cash payments to noncontrolling interest	(0.6)	(0.4)
Net cash provided by financing activities	33.2	10.5
Effect of exchange rate changes on cash and cash equivalents	(13.6)	(1.0)
Net change in cash and cash equivalents	(3.9)	(34.6)
Cash and cash equivalents at beginning of period	246.0	230.4
Cash and cash equivalents at end of period	242.1	195.8
Non-cash financing activities:
Issuance of common stock in connection with acquisition of Michrom Bioresources Inc.		$ 2.9