Related Party Transactions - Transactions with Related Individuals (Details) - Former Chairman Of The Board, Chief Executive Officer And President And Non-Executive Chief Strategy Officer $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Related Party Transaction [Line Items]
Purchases from related party	$ 0.4
Industrial Electronic Controls
Related Party Transaction [Line Items]
Percent of noncontrolling interest	50.00%