Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, accumulated amortization	$ 224.5	$ 74.6
Amortization of Intangible Assets	160.8	62.5	$ 14.1
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, accumulated amortization	174.4	52.0
Trade names
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, accumulated amortization	29.1	9.2
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, accumulated amortization	6.8	2.9
Carrier relationships
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, accumulated amortization	12.1	8.4
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets, accumulated amortization	$ 2.1	$ 2.1