Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Geographic information

The following tables contain certain financial information by geographic area:

December 31, 2018 (In millions)	U.S.		Europe		Asia		Other		Total
Product revenues from external customers	$	6,800.5	$	3,370.3	$	281.2	$	434.8	$	10,886.8
Revenues from anti-CD20 therapeutic programs	$	1,903.4	$	0.2	$	—	$	76.6	$	1,980.2
Other revenues from external customers	$	457.0	$	32.7	$	96.2	$	—	$	585.9
Long-lived assets	$	1,152.7	$	2,442.8	$	3.9	$	1.8	$	3,601.2
December 31, 2017 (In millions)	U.S.		Europe		Asia		Other		Total
Product revenues from external customers	$	7,017.1	$	2,844.8	$	160.1	$	332.7	$	10,354.7
Revenues from anti-CD20 therapeutic programs	$	1,475.6	$	0.6	$	—	$	83.0	$	1,559.2
Other revenues from external customers	$	249.5	$	67.8	$	42.7	$	—	$	360.0
Long-lived assets	$	1,226.9	$	1,948.2	$	5.2	$	2.1	$	3,182.4
December 31, 2016 (In millions)	U.S.		Europe		Asia		Other		Total
Product revenues from external customers	$	7,050.4	$	2,237.2	$	217.3	$	313.0	$	9,817.9
Revenues from anti-CD20 therapeutic programs	$	1,249.5	$	1.9	$	—	$	63.1	$	1,314.5
Other revenues from external customers	$	224.7	$	71.5	$	20.2	$	—	$	316.4
Long-lived assets	$	1,272.3	$	1,221.1	$	7.0	$	1.4	$	2,501.8