A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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- Definition

Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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Stockholders' Equity - Changes in Each Component of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			$ (89.0)
Net current-period other comprehensive income (loss)	$ 13.2	$ (1.3)	17.5	$ (4.1)
Ending balance	(71.5)		(71.5)
Stockholders' Equity Attributable to Parent	1,262.2	1,099.6	1,262.2	1,099.6	$ 1,202.4	$ 1,186.1	$ 1,044.4	$ 1,001.9
Actuarial Losses
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	(0.6)	(0.2)	(0.9)	(0.1)
Amounts reclassified from accumulated other comprehensive loss	0.6	0.5	1.1	1.0
Net current-period other comprehensive income (loss)	0.0	0.3	0.2	0.9
Stockholders' Equity Attributable to Parent	(62.3)	(68.8)	(62.3)	(68.8)	(62.3)	(62.5)	(69.1)	(69.7)
Prior Service Costs
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	(0.2)	0.0	(0.2)	0.0
Amounts reclassified from accumulated other comprehensive loss	0.1	0.1	0.1	0.1
Net current-period other comprehensive income (loss)	(0.1)	0.1	(0.1)	0.1
Stockholders' Equity Attributable to Parent	(1.9)	(1.9)	(1.9)	(1.9)	(1.8)	(1.8)	(2.0)	(2.0)
Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	13.2	(1.4)	17.2	(5.3)
Amounts reclassified from accumulated other comprehensive loss	0.0	0.0	0.0	0.0
Net current-period other comprehensive income (loss)	13.2	(1.4)	17.2	(5.3)
Stockholders' Equity Attributable to Parent	(7.3)	(15.4)	(7.3)	(15.4)	(20.5)	(24.5)	(14.0)	(10.1)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	12.4	(1.2)	16.2	(3.8)
Amounts reclassified from accumulated other comprehensive loss	0.8	(0.1)	1.3	(0.3)
Net current-period other comprehensive income (loss)	13.2	(1.3)	17.5	(4.1)
Stockholders' Equity Attributable to Parent	(71.5)	(85.4)	(71.5)	(85.4)	(84.7)	(89.0)	(84.1)	(81.3)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive (loss) income before reclassifications	0.0	0.4	0.1	1.6
Amounts reclassified from accumulated other comprehensive loss	0.1	(0.7)	0.1	(1.4)
Net current-period other comprehensive income (loss)	0.1	(0.3)	0.2	0.2
Stockholders' Equity Attributable to Parent	$ 0.0	$ 0.7	$ 0.0	$ 0.7	$ (0.1)	$ (0.2)	$ 1.0	$ 0.5