Goodwill (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill.

Schedule of changes in the carrying amount of goodwill

	(in millions)
Balance at January 1, 2022	$	2,107.6
Purchase price allocation adjustments		5.3
Effect of foreign currency translation		(7.0)
Balance at December 31, 2022		2,105.9
Acquisition		2.5
Effect of foreign currency translation		2.7
Balance at December 31, 2023	$	2,111.1