Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total		Total stockholders' equity	Common stock	Capital surplus	(Accumulated deficit) retained earnings	Treasury stock	Cumulative translation adjustment	Defined benefit postretirement plans	Cash flow hedging derivative	Non-controlling interest
Balance at beginning of period at Dec. 31, 2023	$ 3,431.6		$ 3,419.1	$ 0.0	$ 4,429.2	$ (811.1)	$ (0.3)	$ (153.0)	$ (62.2)	$ 16.5	$ 12.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(37.6)		(39.6)			(39.6)					2.0
Equity-based compensation plans	25.2		25.2		25.2
Dividends declared	(44.0)		(44.0)		(44.0)
Shares acquired under stock repurchase program	(9.4)		(9.4)				(9.4)
Pension adjustments, net of tax benefit	(0.9)		(0.9)						(0.9)
Change in cumulative translation adjustment, net of tax benefit (expense)	(36.0)	[1]	(35.8)					(35.8)			(0.2)
Net investment hedge derivative, net of tax expense (benefit)	8.4	[2]	8.4					8.4
Cash flow hedge derivative, net of tax expense (benefit)	4.3	[3]	4.3							4.3
Balance at end of period at Jun. 30, 2024	3,341.6		3,327.3	0.0	4,410.4	(850.7)	(9.7)	(180.4)	(63.1)	20.8	14.3
Balance at beginning of period at Mar. 31, 2024	3,369.1		3,355.4	0.0	4,414.9	(834.3)	(0.3)	(183.5)	(62.6)	21.2	13.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(15.7)		(16.4)			(16.4)					0.7
Equity-based compensation plans	17.6		17.6		17.6
Dividends declared	(22.1)		(22.1)		(22.1)
Shares acquired under stock repurchase program	(9.4)		(9.4)				(9.4)
Pension adjustments, net of tax benefit	(0.5)		(0.5)						(0.5)
Change in cumulative translation adjustment, net of tax benefit (expense)	(0.5)	[1]	(0.4)					(0.4)			(0.1)
Net investment hedge derivative, net of tax expense (benefit)	3.5	[2]	3.5					3.5
Cash flow hedge derivative, net of tax expense (benefit)	(0.4)	[3]	(0.4)							(0.4)
Balance at end of period at Jun. 30, 2024	3,341.6		3,327.3	0.0	4,410.4	(850.7)	(9.7)	(180.4)	(63.1)	20.8	14.3
Balance at beginning of period at Dec. 31, 2024	3,314.4		3,298.5	0.0	4,394.0	(839.7)	(9.7)	(211.4)	(62.6)	27.9	15.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(47.4)		(49.5)			(49.5)					2.1
Equity-based compensation plans	18.0		18.0		18.0
Dividends declared	(22.1)		(22.1)		(22.1)
Pension adjustments, net of tax benefit	(0.8)		(0.8)						(0.8)
Change in cumulative translation adjustment, net of tax benefit (expense)	147.4	[1]	146.8					146.8			0.6
Net investment hedge derivative, net of tax expense (benefit)	(60.8)	[2]	(60.8)					(60.8)
Cash flow hedge derivative, net of tax expense (benefit)	(22.5)	[3]	(22.5)							(22.5)
Balance at end of period at Jun. 30, 2025	3,326.2		3,307.6	0.0	4,389.9	(889.2)	(9.7)	(125.4)	(63.4)	5.4	18.6
Balance at beginning of period at Mar. 31, 2025	3,310.5		3,293.4	0.0	4,374.4	(855.5)	(9.7)	(167.2)	(63.0)	14.4	17.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(32.6)		(33.7)			(33.7)					1.1
Equity-based compensation plans	15.5		15.5		15.5
Pension adjustments, net of tax benefit	(0.4)		(0.4)						(0.4)
Change in cumulative translation adjustment, net of tax benefit (expense)	87.1	[1]	86.7					86.7			0.4
Net investment hedge derivative, net of tax expense (benefit)	(44.9)	[2]	(44.9)					(44.9)
Cash flow hedge derivative, net of tax expense (benefit)	(9.0)	[3]	(9.0)							(9.0)
Balance at end of period at Jun. 30, 2025	$ 3,326.2		$ 3,307.6	$ 0.0	$ 4,389.9	$ (889.2)	$ (9.7)	$ (125.4)	$ (63.4)	$ 5.4	$ 18.6

[1] Tax Expense (Benefit) of $4.4 million and $(0.3) million for the three months ended June 30, 2025 and 2024, respectively. Tax Expense (Benefit) of $(1.1) million and $0.3 million for the six months ended June 30, 2025 and 2024, respectively.

[2] Tax Expense (Benefit) of $(16.0) million and $1.2 million for the three months ended June 30, 2025 and 2024, respectively. Tax Expense (Benefit) of $(21.8) million and $2.9 million for the six months ended June 30, 2025 and 2024, respectively.

[3] Tax Expense (Benefit) of $(3.2) million and $(0.1) million for the three months ended June 30, 2025 and 2024, respectively. Tax Expense (Benefit) of $(8.1) million and $1.5 million for the six months ended June 30, 2025 and 2024, respectively.