Acquisitions - Summary of Consideration Transferred and Estimated Fair Value Assigned to Assets Acquired and Liabilities Assumed (Details) € in Millions, $ in Millions			6 Months Ended
	Jun. 03, 2025 USD ($)	Jun. 03, 2025 EUR (€)	Nov. 30, 2025 USD ($)	May 31, 2025 USD ($)
Consideration Transferred
Contingent Capital Contribution - Cash	$ 11.3	€ 10.0
Recognized amounts of identifiable assets acquired and liabilities assumed
Goodwill			$ 101.5	$ 79.6
Sitem Group
Consideration Transferred
Cash Consideration			44.2
Contingent Consideration - Cash	4.7	€ 4.2	4.7
Subtotal			48.9
Contingent Capital Contribution - Cash			0.3
Subtotal			5.4
Business combination contribution from subsidiary			12.0
Total Consideration Transferred			66.3
Total Consideration Transferred			66.3
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents			42.6
Receivables			39.6
Inventories			40.4
Deferred income tax assets			3.2
Prepaid expenses			4.9
Operating lease right-of-use assets			16.5
Finance lease right-of-use assets			8.6
Property, plant and equipment			98.8
Intangible assets			24.0
Other assets			1.0
Total identifiable assets			279.6
Accounts payable			(34.7)
Accrued compensation and related taxes			(9.3)
Current operating lease liabilities			(2.7)
Current finance lease liabilities			(2.4)
Noncurrent operating lease liabilities			(13.9)
Noncurrent finance lease liabilities			(6.2)
Current maturities of long-term debt and short-term debt			(25.9)
Deferred income tax liabilities			(16.4)
Long-term debt			(25.3)
Pension and other postretirement benefit obligations			(14.3)
Other non-current liabilities			(1.9)
Total identifiable liabilities			(153.0)
Sitem Group - Net identifiable assets			126.6
Goodwill	21.5		21.5
Total - Sitem Group			148.1
Contribution of Tempel's electrical steel subsidiary in Nagold, Germany			12.0
Redeemable NCI - Net Put option			(10.7)
Redeemable NCI			(71.1)
Total - Redeemable NCI	(81.8)		(81.8)
Cash Capital Contribution			$ 5.1
Sitem Group \| Preliminary Valuation
Consideration Transferred
Cash Consideration	44.2
Contingent Consideration - Cash	4.7
Subtotal	48.9
Contingent Capital Contribution - Cash	0.3
Subtotal	5.4
Business combination contribution from subsidiary	12.0
Total Consideration Transferred	66.3
Total Consideration Transferred	66.3
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents	42.6
Receivables	39.6
Inventories	40.4
Deferred income tax assets	3.2
Prepaid expenses	4.9
Operating lease right-of-use assets	16.5
Finance lease right-of-use assets	8.6
Property, plant and equipment	98.8
Intangible assets	24.0
Other assets	1.0
Total identifiable assets	279.6
Accounts payable	(34.7)
Accrued compensation and related taxes	(9.3)
Current operating lease liabilities	(2.7)
Current finance lease liabilities	(2.4)
Noncurrent operating lease liabilities	(13.9)
Noncurrent finance lease liabilities	(6.2)
Current maturities of long-term debt and short-term debt	(25.9)
Deferred income tax liabilities	(16.9)
Long-term debt	(25.3)
Pension and other postretirement benefit obligations	(14.3)
Other non-current liabilities	(1.9)
Total identifiable liabilities	(153.5)
Sitem Group - Net identifiable assets	126.1
Goodwill	22.0
Total - Sitem Group	148.1
Contribution of Tempel's electrical steel subsidiary in Nagold, Germany	12.0
Redeemable NCI - Net Put option	(10.7)
Redeemable NCI	(71.1)
Total - Redeemable NCI	(81.8)
Cash Capital Contribution	5.1
Sitem Group \| Measurement Period Adjustments
Recognized amounts of identifiable assets acquired and liabilities assumed
Deferred income tax liabilities	0.5
Total identifiable liabilities	0.5
Sitem Group - Net identifiable assets	0.5
Goodwill	$ (0.5)

Worthington Steel, Inc. 10-Q