Supplemental Financial Information - Condensed Consolidated Balance Sheets and Statement of Operations related to Grants Receivable and Refundable Investment Credits (Details) $ in Millions	12 Months Ended
Jan. 31, 2026 USD ($)
Government Assistance [Line Items]
Government Assistance, Asset, Increase, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid expenses and other current assets
Government Assistance, Asset, Decrease, Current, Statement of Financial Position [Extensible Enumeration]	Inventories
Government Assistance, Asset, Decrease, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Property and equipment, net
Prepaid expenses and other current assets	$ 107.3
Inventories	(11.8)
Property and equipment, net	(3.7)
Total	$ 91.8
Government Assistance, Operating Expense, Decrease (Increase), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of goods sold, Research and development, Selling, general and administrative
Total	$ 88.3
Cost of goods sold
Government Assistance [Line Items]
Government Assistance, Operating Expense, Decrease (Increase), Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of goods sold
Total	$ 68.8
Research and development
Government Assistance [Line Items]
Government Assistance, Operating Expense, Decrease (Increase), Statement of Income or Comprehensive Income [Extensible Enumeration]	Research and development
Total	$ 15.1
Selling, general and administrative
Government Assistance [Line Items]
Government Assistance, Operating Expense, Decrease (Increase), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, general and administrative
Total	$ 4.4

Government Assistance, Asset, Increase (Decrease)

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- Definition

Amount of decrease in asset from government assistance, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 832
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483507/832-10-50-3

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- Definition

Indicates line item in statement of financial position that includes decrease in asset from government assistance, classified as current.

+ References

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- Definition

Amount of decrease in asset from government assistance, classified as noncurrent.

+ References

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- Definition

Indicates line item in statement of financial position that includes decrease in asset from government assistance, classified as noncurrent.

+ References

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- Definition

Amount of increase in asset from government assistance, classified as current.

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- Definition

Indicates line item in statement of financial position that includes increase in asset from government assistance, classified as current.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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Amount of decrease (increase) in expense from government assistance, classified as operating.

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Indicates line item in statement of income or comprehensive income that includes decrease (increase) in expense from government assistance, classified as operating.

+ References

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