Revenue Recognition - Summary of Revenue Disaggregated by Category (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) Segment
Disaggregation of Revenue [Line Items]
Number of operating segments | Segment	3
ATG [Member] | CA-NA [Member]
Disaggregation of Revenue [Line Items]
Equipment revenue	$ 43.4
Satellite [Member] | CA-NA [Member]
Disaggregation of Revenue [Line Items]
Equipment revenue	2.0
Airline, OEM and Aftermarket Dealer [Member] | Product [Member] | Transition Agreements To Airline-directed Model [Member] | CA-NA [Member]
Disaggregation of Revenue [Line Items]
Equipment revenue	45.4
Airline Partners [Member] | Product [Member] | Transition Agreements To Airline-directed Model [Member] | CA-NA [Member]
Disaggregation of Revenue [Line Items]
Equipment revenue	$ 45.4