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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Earnings Per Share [Abstract]        
Net income attributable to stockholders of UL Solutions $ 101 $ 94 $ 157 $ 149
Basic weighted average common shares outstanding (in shares) 200 200 200 200
Effect of dilutive securities (in shares) 1 0 1 0
Diluted weighted average common shares outstanding (in shares) 201 200 201 200
Basic earnings per share attributable to stockholder of UL Solutions (in dollars per share) $ 0.51 $ 0.47 $ 0.79 $ 0.75
Diluted earnings per share attributable to stockholder of UL Solutions (in dollars per share) $ 0.50 $ 0.47 $ 0.78 $ 0.75