Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue from contracts with customer

The Company disaggregates revenue from contracts with customers into product and geographical regions as summarized below.

	Three months ended March 31,
	2021		2020
SOLIRIS
United States	$	553.9	$	556.2
Europe	251.3		263.5
Asia Pacific	102.4		87.1
Rest of World	120.0		116.1
Total	$	1,027.6	$	1,022.9
ULTOMIRIS
United States	$	206.9	$	131.5
Europe	63.8		33.8
Asia Pacific	73.3		57.1
Rest of World	2.9		0.4
Total	$	346.9	$	222.8
STRENSIQ
United States	$	155.2	$	128.1
Europe	18.9		24.0
Asia Pacific	17.0		13.6
Rest of World	6.4		6.5
Total	$	197.5	$	172.2
ANDEXXA
United States	$	25.3	$	—
Europe	3.6		—
Asia Pacific	—		—
Rest of World	—		—
Total	$	28.9	$	—
KANUMA
United States	$	17.1	$	16.4
Europe	10.8		7.5
Asia Pacific	1.2		0.9
Rest of World	5.7		1.9
Total	$	34.8	$	26.7
Total Net Product Sales	$	1,635.7	$	1,444.6

Summary of receivables and contract liabilities from contracts

	March 31, 2021		December 31, 2020
Receivables, which are included in "Trade accounts receivable, net"	$	1,473.0	$	1,409.3
Contract liabilities, which are included in "Other current liabilities"	$	23.8	$	3.0