Inventory (Tables)

3 Months Ended

Mar. 31, 2025

Inventory Disclosure [Abstract]

Components of inventory

The components of inventory are summarized as follows:

(In millions)	As of March 31, 2025		As of December 31, 2024
Raw materials	$	306.4	$	317.8
Work in process	1,717.0		1,882.8
Finished goods	367.9		353.8
Total inventory	$	2,391.3	$	2,554.4
Balance Sheet Classification:
Inventory	$	2,273.9	$	2,460.5
Investments and other assets	117.4		93.9
Total inventory	$	2,391.3	$	2,554.4