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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Related Party Transaction [Line Items]
Dividends to stockholders of UL Solutions	$ 25	$ 20	$ 50	$ 40
UL Standards & Engagement Transactions
Related Party Transaction [Line Items]
Incurred expenses	5	5	10	10
Related Party
Related Party Transaction [Line Items]
Dividends to stockholders of UL Solutions	$ 20	$ 20	$ 45	$ 40

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