Income Taxes - Summary of Components of Net Deferred Income Tax Asset (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets (liabilities):
Tax loss carryforwards	$ 396.9	$ 423.9
Tax credit carryforwards	266.4	280.6
Retirement benefit plans	55.8	82.9
Accrued liabilities	193.9	177.9
Self-insurance reserves	6.7	7.1
Current asset basis differences	41.4	43.3
Long-term asset basis differences	(24.2)	(36.5)
Deferred compensation	25.4	22.6
Capitalized engineering, research and development	138.3	67.1
Undistributed earnings of foreign subsidiaries	(74.0)	(71.7)
Derivative instruments and hedging activities	2.0
Derivative instruments and hedging activities		(5.2)
Other	(12.3)	(8.9)
Deferred tax assets, gross, total	1,016.3	983.1
Valuation allowance	(406.9)	(397.7)
Net deferred income tax asset	$ 609.4	$ 585.4

Deferred Tax Assets, Current Asset Basis Difference

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Deferred Tax Assets, Tax Credit Carryforwards, Net of Stock-Based Compensation Adjustment

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Deferred Tax Liabilities, Long-Term Asset Basis Difference

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from derivative instruments.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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