Inventory (Tables)

3 Months Ended

Mar. 31, 2026

Inventory Disclosure [Abstract]

Components of inventory

The components of inventory are summarized as follows:

(In millions)	As of March 31, 2026		As of December 31, 2025
Raw materials	$	278.7	$	293.4
Work in process	1,351.6		1,595.2
Finished goods	458.2		424.9
Total inventory	$	2,088.5	$	2,313.5
Balance Sheet Classification:
Inventory	$	1,949.0	$	2,168.1
Investments and other assets	139.5		145.4
Total inventory	$	2,088.5	$	2,313.5