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.

No definition available.

Name:	us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

NuScale Reverse Recapitalization (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Warrant or Right [Line Items]
Proceeds from NuScale de-SPAC transaction	$ 341	$ 0	$ 341	$ 0
SMR Warrants
Class of Warrant or Right [Line Items]
Warrants assumed	$ 48