Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Summary of Income (Loss) from Continuing Operations Before Income Taxes

Income (loss) before income taxes for the years ended December 31, 2023, 2022 and 2021 is summarized as follows:

	2023			2022			2021
Income (loss) before income taxes:
United States	$	(32.7	)	$	(203.8	)	$	(39.0	)
Foreign		76.9			83.6			56.1
Total	$	44.2		$	(120.2	)	$	17.1

Schedule of Provision for Income Taxes

Provision for income taxes for the years ended December 31, 2023, 2022 and 2021 is summarized as follows:

	2023			2022			2021
Current:
United States federal and state	$	0.3		$	(11.7	)	$	(1.2	)
Foreign		10.7			10.9			7.9
Total current		11.0			(0.8	)		6.7
Deferred:
United States federal and state		—			(2.4	)		0.6
Foreign		(6.0	)		6.6			(1.2	)
Total deferred		(6.0	)		4.2		$	(0.6	)
Provision for income taxes	$	5.0		$	3.4		$	6.1

Reconciliation of the U.S. Federal Statutory Income Tax Rate to the Company's Effective Income Tax Rate for Continuing Operations

The items accounting for the difference between income taxes computed at the United States federal statutory rate and the Company's effective rate for the years ended December 31, 2023, 2022 and 2021 is summarized as follows:

	2023			2022			2021
Federal income tax at statutory rate	$	9.3		$	(25.2	)	$	3.6
State income tax provision		2.0			0.9			0.3
Manufacturing and research incentives		(1.3	)		(0.5	)		(0.2	)
Taxes on foreign income which differ from the federal    statutory rate		9.1			(1.9	)		1.5
Adjustments for unrecognized tax benefits		0.2			(11.0	)		(2.3	)
Adjustments to valuation allowances		(28.6	)		5.2			4.5
United States tax reform		10.1			4.8			(1.6	)
Goodwill and indefinite-lived intangible asset impairment		—			31.7			—
Audit settlements		(3.0	)		—			(1.9	)
Non-deductible expenses		8.2			1.6			1.3
Other items		(1.0	)		(2.2	)		0.9
Provision for income taxes	$	5.0		$	3.4		$	6.1

Schedules of Deferred Tax Assets (Liabilities)

Temporary differences and carryforwards that give rise to deferred tax assets and liabilities are summarized as follows:

	2023			2022
Deferred income tax assets:
Inventories	$	14.7		$	25.3
Deferred employee benefits		27.8			28.2
Product warranty reserves		7.8			8.7
Product liability reserves		2.6			2.2
Tax credits		7.9			7.2
Loss and other tax attribute carryforwards		114.1			129.6
Deferred revenue		3.9			0.2
Capitalized research costs		10.5			4.8
Other		12.5			13.8
Total deferred income tax assets		201.8			220.0
Less valuation allowance		(130.8	)		(174.1	)
Net deferred income tax assets	$	71.0		$	45.9
Deferred income tax liabilities
Accounts receivable	$	—		$	4.0
Property, plant and equipment		25.6			5.1
Intangible assets		28.5			28.0
Total deferred income tax liabilities	$	54.1		$	37.1
Net deferred income tax assets	$	16.9		$	8.8

The net deferred tax assets reflected in the Consolidated Balance Sheets for the years ended December 31, 2023 and 2022 are summarized as follows:

	2023			2022
Long-term income tax assets, included in    other non-current assets	$	24.4		$	13.7
Long-term deferred income tax liability		(7.5	)		(4.9	)
Net deferred income tax asset	$	16.9		$	8.8

Schedule of Open Tax Years for Which the Company could be Subject to Income Tax Examination

The following table provides the open tax years for which the Company could be subject to income tax examination by the tax authorities in its major jurisdictions:

Jurisdiction	Open Years
U.S. federal	2016 — 2023
China	2014 — 2023
France	2021 — 2023
Germany	2018 — 2023

Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits excluding interest and penalties as of December 31, 2023, 2022 and 2021 are summarized as follows:

	2023			2022			2021
Balance at beginning of year	$	9.1		$	18.4		$	20.1
Additions for tax positions of current year		0.1			0.1			0.1
Additions for tax positions of prior years		0.1			3.6			—
Reductions for tax positions of prior years		—			(11.0	)		(0.2	)
Reductions based on settlements with tax    authorities		—			—			(0.2	)
Reductions for lapse of statute of limitations		(0.2	)		(2.0	)		(1.4	)
Balance at end of year	$	9.1		$	9.1		$	18.4