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Related Party Transactions (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) joint_venture	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Related Party Transaction [Line Items]
Payable to affiliates	$ 2.1		$ 3.0
Two microwave communication network JVs
Related Party Transaction [Line Items]
Payments to related party	$ 5.2	$ 5.6
Number of microwave communication network JVs the Company makes payments to | joint_venture	2
Level 3
Related Party Transaction [Line Items]
Payments for purchases	$ 0.3	0.7
Dell
Related Party Transaction [Line Items]
Payments for purchases	1.1	0.6
SBI
Related Party Transaction [Line Items]
Payments to related party	$ 3.4	$ 2.3

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Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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