v3.7.0.1
Acquisitions (Schedule of Assets Acquired and Liabilities Assumed) (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
May 16, 2016
Business Acquisition [Line Items]      
Goodwill $ 24,685.5 $ 23,366.3  
CWC [Member]      
Business Acquisition [Line Items]      
Cash and cash equivalents     $ 210.8
Other current assets     578.5
Property and equipment, net     2,914.2
Goodwill     5,344.3
Intangible assets subject to amortization, net     1,416.0
Other assets, net     577.8
Current portion of debt and capital lease obligations     (94.1)
Other accrued and current liabilities     (753.2)
Long-term debt and capital lease obligations     (3,305.4)
Other long-term liabilities     (751.8)
Noncontrolling interests     (1,453.2)
Total purchase price     $ 4,683.9