Impairment - Schedule of Impairment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring [Line Items]
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]		Restructuring Charges	Restructuring Charges
Energy Solutions
Restructuring [Line Items]
Energy Solutions' equity method investments		$ 0	$ 28,000,000
Total impairment		(24,000,000)	290,000,000
Energy Solutions | Stork and AMECO
Restructuring [Line Items]
Fair value adjustment of Stork and AMECO assets	$ 0	(63,000,000)	233,000,000
Energy Solutions | Other Reporting Unit | Stork and AMECO
Restructuring [Line Items]
Impairment of assets		40,000,000	13,000,000
Energy Solutions | Technology-Based Intangible Assets
Restructuring [Line Items]
Impairment of assets		$ 0	$ 16,000,000