OTHER COMPREHENSIVE INCOME/(LOSS) (Tables)

12 Months Ended

Dec. 31, 2023

Equity [Abstract]

Accumulated Other Comprehensive Income/(Loss)

The components of accumulated other comprehensive income/(loss) were as follows:

	2023
(in millions)	Foreign currency translation		Employee benefit plans		Total
Other comprehensive income/(loss), net of tax:
Currency translation differences on investments in foreign subsidiaries	$	144.9	$	—	$	144.9
Other comprehensive income/(loss), net	—		(4.3)		(4.3)
Other comprehensive income/(loss), net of tax	144.9		(4.3)		140.6
Beginning balance	(815.0)		(127.4)		(942.4)
Other comprehensive income/(loss), net of tax	144.9		(4.3)		140.6
Ending balance	$	(670.1)	$	(131.7)	$	(801.8)

	2022
$ in millions	Foreign currency translation	Employee benefit plans	Total
Other comprehensive income/(loss), net of tax:
Currency translation differences on investments in foreign subsidiaries	(463.1)	—	(463.1)
Other comprehensive income/(loss), net	—	(37.8)	(37.8)
Other comprehensive income/(loss), net of tax	(463.1)	(37.8)	(500.9)
Beginning balance	(351.9)	(89.6)	(441.5)
Other comprehensive income/(loss), net of tax	(463.1)	(37.8)	(500.9)
Ending balance	(815.0)	(127.4)	(942.4)

	2021
$ in millions	Foreign currency translation	Employee benefit plans	Total
Other comprehensive income/(loss) net of tax:
Currency translation differences on investments in foreign subsidiaries	(73.4)	—	(73.4)
Other comprehensive income/(loss), net	—	36.4	36.4
Other comprehensive income/(loss), net of tax	(73.4)	36.4	(37.0)
Beginning balance	(278.5)	(126.0)	(404.5)
Other comprehensive income/(loss), net of tax	(73.4)	36.4	(37.0)
Ending balance	(351.9)	(89.6)	(441.5)