Share-based Payments

9 Months Ended

Sep. 30, 2011

Share-based Payments [Abstract]

Share-based Payments

15.   Share-based Payments

The following table summarizes our equity grants to employees, officers and directors under our current stock plans:

	For the Nine Months
	Ended September 30,
	2011		2010
Stock options		—		124,000
Market stock units(a)		393,000		400,000
Cash settled performance shares(b)		490,000		378,000
Time-vested restricted stock units(c)		1,352,000		2,000,000
Performance-vested restricted stock units(d)		1,000		4,000

(a)	Market stock units (MSUs) granted for the nine months ended September 30, 2010, represents the target number of shares eligible to be earned at the time of grant.
	MSUs granted for the nine months ended September 30, 2011, includes approximately 26,000 additional MSUs issued in 2011 based upon the attainment of performance criteria set for 2010 in relation to shares granted in 2010. The remainder of the MSUs granted in 2011 represents the target number of shares eligible to be earned at the time of grant. These grants were made in conjunction with the hiring of employees and our annual awards made in February 2011.
(b)	Cash settled performance shares (CSPSs) granted for the nine months ended September 30, 2010, represents the target number of shares eligible to be earned at the time of grant.
	CSPSs granted for the nine months ended September 30, 2011, includes approximately 95,000 additional CSPSs issued in 2011 based upon the attainment of performance criteria set for 2010 in relation to shares granted in 2010. The remainder of the CSPSs granted in 2011 represents the target number of shares eligible to be earned at the time of grant. These grants were made in conjunction with the hiring of employees and our annual awards made in February 2011.
(c)	Time-vested restricted stock units (RSUs) granted for the nine months ended September 30, 2011, includes approximately 1.2 million RSUs granted in connection with our annual awards made in February 2011, and 184,000 RSUs granted in conjunction with the hiring of employees and grants made to our Board of Directors.
(d)	Performance-vested restricted stock units (PVRSUs) granted for the nine months ended September 30, 2010, represents the target number of shares eligible to be earned at the time of grant; approximately 1,000 additional PVRSUs were issued in 2011 based upon the attainment of performance criteria set for 2010 in relation to shares granted in 2010.

In addition, for the nine months ended September 30, 2011, approximately 382,000 shares were issued under our employee stock purchase plan compared to approximately 457,000 shares issued in the prior year comparative period.

The following table summarizes share-based compensation expense included within our condensed consolidated statements of income:

	For the Three Months						For the Nine Months
	Ended September 30,						Ended September 30,
(In millions)	2011			2010			2011			2010
Research and development	$	14.2		$	15.9		$	46.4		$	48.0
Selling, general and administrative		22.4			26.9			65.2			97.1
Restructuring charge		—			—			(0.6	)		—
Subtotal		36.6			42.8			111.0			145.1
Capitalized share-based compensation costs		(1.3	)		(0.9	)		(3.3	)		(2.5	)
Share-based compensation expense included in total cost and expenses		35.3			41.9			107.7			142.6
Income tax effect		(10.0	)		(13.0	)		(33.0	)		(45.4	)
Share-based compensation expense included in net income attributable to Biogen Idec Inc.	$	25.3		$	28.9		$	74.7		$	97.2

The following table summarizes share-based compensation expense associated with each of our share-based compensation programs:

	For the Three Months						For the Nine Months
	Ended September 30,						Ended September 30,
(In millions)	2011			2010			2011			2010
Stock options	$	1.8		$	3.0		$	4.5		$	23.1
Market stock units		3.5			2.3			11.2			7.8
Time-vested restricted stock units		22.0			30.8			68.2			96.5
Performance-vested restricted stock units settled in shares		0.2			0.7			0.9			4.4
Cash settled performance shares		6.2			2.7			21.7			8.0
Employee stock purchase plan		2.9			3.3			4.5			5.3
Subtotal		36.6			42.8			111.0			145.1
Capitalized share-based compensation costs		(1.3	)		(0.9	)		(3.3	)		(2.5	)
Share-based compensation expense included in total cost and expenses	$	35.3		$	41.9		$	107.7		$	142.6