Acquisitions and Divestitures - Acquisitions (Details) - USD ($) $ in Millions	1 Months Ended
	Aug. 31, 2023	Jul. 31, 2023	Mar. 31, 2024	Dec. 31, 2023
Asset Acquisition [Line Items]
Goodwill			$ 618	$ 623
Certification Entity for Renewable Energies (CERE)
Asset Acquisition [Line Items]
Percentage of business acquired	100.00%
Cash consideration	$ 14
Goodwill	$ 11
HBI Compliance Limited Asset Acquisition
Asset Acquisition [Line Items]
Percentage of business acquired		100.00%
Cash consideration		$ 6