Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Stock-Based Compensation

Summary of Stock Option Activity Under all Stock Plans

				Stock Options Outstanding
	Shares Available for Grant			Number Outstanding			Weighted Average Exercise Price Per Share
Balance at December 31, 2010		1.4			4.8		$	209.03
Options authorized		1.3			—			—
Options granted		(1.2	)		1.2			339.76
Options exercised		—			(0.5	)		142.81
Options forfeited/expired		0			(0.1	)		274.47
Balance at June 30, 2011		1.5			5.4		$	244.66

Summary of Stock-Based Compensation Charges

	Three Months Ended June 30,				Six Months Ended June 30,
	2011		2010		2011		2010
Cost of sales - products	$	3.2	$	2.4	$	6.0	$	4.5
Cost of sales - services		2.8		2.2		5.3		4.1
Total cost of sales		6.0		4.6		11.3		8.6
Selling, general and administrative		21.4		20.0		41.6		37.8
Research and development		7.4		5.7		14.0		10.7
Stock-based compensation expense before income taxes		34.8		30.3		66.9		57.1
Income tax effect		11.2		8.3		21.7		15.9
Stock-based compensation expense after income tax effect	$	23.6	$	22.0	$	45.2	$	41.2

Fair Value of the Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Stock Options
Average risk free interest rate		1.95	%		2.33	%		2.30	%		2.33	%
Average expected term (years)		4.6			4.6			4.8			4.8
Average expected volatility		35	%		37	%		35	%		35	%
Weighted average fair value at grant date	$	113.55		$	115.53		$	114.67		$	111.69
Total stock-based compensation expense (in millions)	$	32.8		$	28.3		$	62.8		$	53.2
ESPP
Average risk free interest rate								0.37	%		0.49	%
Average expected term (years)								1.3			1.3
Average expected volatility								35	%		35	%
Weighted average fair value at grant date							$	97.07		$	99.34
Total stock-based compensation expense (in millions)	$	2.0		$	2.0		$	4.1		$	3.9