Goodwill

6 Months Ended

Jun. 30, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill

7. Goodwill

The changes to carrying amount of goodwill for the six months ended June 30, 2020 were as follows:

(millions) (unaudited)	Commercial			Aviation		Total
Balance as of December 31, 2019	$	368.9		$	217.1	$	586.0
Foreign currency translation		(0.2	)		—		(0.2	)
Balance as of June 30, 2020	$	368.7		$	217.1	$	585.8

See Note 1. Significant Accounting Policies and Practices for additional detail on the Company's policy for assessing goodwill for impairment and results of impairment testing performed as of June 30, 2020. No impairment charges were recorded during the three and six months ended June 30, 2020 and 2019, respectively.