Other Comprehensive Loss (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Cumulative translation adjustments	[1]	$ (268.8)	$ (364.9)	$ (381.2)
Net pension liability	[1]	(78.1)	(84.0)	(55.0)
Distribution to Veoneer	[1]			13.0
Total (ending balance)	[1]	(346.9)	(448.9)	(423.2)
Deferred taxes on the pension liability	[1]	$ 22.8	$ 24.6	$ 15.4

[1] The components of Other Comprehensive Loss are net of any related income tax effects.