Akcea Acquisition (Tables)

12 Months Ended

Dec. 31, 2020

Akcea Acquisition [Abstract]

Akcea Acquisition

The following table summarizes the costs by category related to the Akcea Acquisition (in millions):

	Three Months Ended December 31, 2020
R&D expenses	$	3.9
SG&A expenses		11.4
Total	$	15.3

The following table summarizes the severance and retention reserve included in accrued compensation for the period indicated related to Akcea Acquisition (in millions):

	Three Months Ended December 31, 2020
Severance & retention reserve beginning balance	$	—
Severance & retention expensed during period		15.3
Amounts paid during the period		(0.6	)
Severance & retention reserve ending balance	$	14.7