CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Cash flows provided by (used in) operating activities:
Net earnings	$ 208.9	$ 208.9
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation and amortization	96.8	86.1
Share-based compensation	12.8	14.3
Income tax benefit from stock option exercises	6.2	6.2
Excess income tax benefit from stock option exercises	(1.2)	(2.4)
Inventory step-up	1.0	4.4
Changes in operating assets and liabilities, net of effect of acquisitions:
Income taxes	47.8	18.1
Receivables	(54.2)	(70.5)
Inventories	(6.0)	(13.8)
Accounts payable and accrued expenses	(29.9)	(23.0)
Other assets and liabilities	(74.8)	(46.1)
Net cash provided by operating activities	207.4	182.2
Cash flows provided by (used in) investing activities:
Additions to instruments	(28.8)	(46.3)
Additions to other property, plant and equipment	(19.5)	(17.1)
Purchases of investments	(255.6)	(65.3)
Sales of investments	174.6	75.0
Investments in other assets	(34.9)	(13.2)
Net cash used in investing activities	(164.2)	(66.9)
Cash flows provided by (used in) financing activities:
Net proceeds under revolving credit facilities	1.0	0.2
Proceeds from employee stock compensation plans	10.3	17.0
Excess income tax benefit from stock option exercises	1.2	2.4
Repurchase of common stock	(141.6)	(236.1)
Net cash used in financing activities	(129.1)	(216.5)
Effect of exchange rates on cash and cash equivalents	(8.4)	7.9
Increase (decrease) in cash and cash equivalents	(94.3)	(93.3)
Cash and cash equivalents, beginning of year	768.3	668.9
Cash and cash equivalents, end of period	$ 674.0	$ 575.6

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).