Share-Based Payments (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Share-based compensation expense included in condensed consolidated statements of income

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

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(In millions)	2020		2019		2020		2019
Research and development	$	14.6	$	15.4	$	63.1	$	65.2
Selling, general and administrative	25.0		34.2		98.4		116.8
Subtotal	39.6		49.6		161.5		182.0
Capitalized share-based compensation costs	(1.9)		(1.7)		(4.9)		(7.8)
Share-based compensation expense included in total cost and expenses	37.7		47.9		156.6		174.2
Income tax effect	(5.4)		(8.1)		(25.7)		(29.1)
Share-based compensation expense included in net income attributable to Biogen Inc.	$	32.3	$	39.8	$	130.9	$	145.1

Summary of share-based compensation expense associated with each of our share-based compensating programs

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

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
(In millions)	2020		2019		2020		2019
Market stock units	$	5.5	$	9.3	$	32.0	$	24.8
Time-vested restricted stock units	35.3		37.9		107.3		104.4
Cash settled performance units	—		0.3		(1.7)		(0.3)
Performance units	—		0.2		(0.1)		1.0
Performance stock units settled in stock	(8.4)		(1.1)		4.0		13.0
Performance stock units settled in cash	4.1		1.3		9.0		3.2
Employee stock purchase plan	3.1		1.7		11.0		9.7
NST stock options	—		—		—		26.2
Subtotal	39.6		49.6		161.5		182.0
Capitalized share-based compensation costs	(1.9)		(1.7)		(4.9)		(7.8)
Share-based compensation expense included in total cost and expenses	$	37.7	$	47.9	$	156.6	$	174.2