CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows provided by (used in) operating activities:
Net earnings	$ 218.0	$ 208.9
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation and amortization	85.1	96.8
Share-based compensation	14.0	12.8
Income tax benefit from stock option exercises	13.6	6.2
Excess income tax benefit from stock option exercises	(3.5)	(1.2)
Inventory step-up	0.8	1.0
Changes in operating assets and liabilities, net of effect of acquisitions:
Income taxes	17.6	47.8
Receivables	(44.2)	(54.2)
Inventories	(59.7)	(6.0)
Accounts payable and accrued expenses	(31.3)	(29.9)
Other assets and liabilities	(29.9)	(74.8)
Net cash provided by operating activities	180.5	207.4
Cash flows provided by (used in) investing activities:
Additions to instruments	(57.5)	(28.8)
Additions to other property, plant and equipment	(17.9)	(19.5)
Purchases of investments	(94.8)	(255.6)
Sales of investments	232.0	174.6
Investments in other assets	(8.8)	(34.9)
Net cash provided by (used in) investing activities	53.0	(164.2)
Cash flows provided by (used in) financing activities:
Net (payments) proceeds under revolving credit facilities	(100.1)	1.0
Dividends paid to stockholders	(30.9)
Proceeds from employee stock compensation plans	67.0	10.3
Excess income tax benefit from stock option exercises	3.5	1.2
Repurchase of common stock	(392.0)	(141.6)
Net cash used in financing activities	(452.5)	(129.1)
Effect of exchange rates on cash and cash equivalents	(8.3)	(8.4)
Decrease in cash and cash equivalents	(227.3)	(94.3)
Cash and cash equivalents, beginning of year	884.3	768.3
Cash and cash equivalents, end of period	$ 657.0	$ 674.0