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Revenue and Contracts with Customers (Tables)

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenue from External Customers by Geographic Areas

The following table presents revenue from SWU and uranium sales disaggregated by geographical region based on the billing addresses of customers (in millions):

			Three Months Ended March 31,
			2024						2023
United States			$	23.6					$	58.7
Foreign			—						0.1
Revenue - SWU and uranium			$	23.6					$	58.8

Contract with Customer, Asset and Liability

						March 31, 2024						December 31, 2023
						(in millions)
Accounts receivable:
Billed						$	9.9					$	40.2
Unbilled *						10.0						9.2
Accounts receivable						$	19.9					$	49.4
* Billings under certain contracts in the Technical Solutions segment are invoiced based on approved provisional billing rates. Unbilled revenue represents the difference between actual costs incurred and invoiced amounts. The Company expects to invoice and collect the unbilled amounts after actual rates are submitted to the customer and approved. Unbilled revenue also includes unconditional rights to payment that are not yet billable under applicable contracts due to timing of invoice processing or pending the compilation of supporting documentation.

						March 31,   2024						December 31,   2023						Year-To-Date Change
Deferred revenue - current						$	252.8					$	252.4					$	0.4
Advances from customers - current						$	30.2					$	30.2					$	—
Advances from customers - noncurrent						$	32.8					$	32.8					$	—

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-10

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X

- Definition

Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph a
-SubTopic 10
-Topic 280
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

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