Variable Interest Entities Variable Interest Entities - Table 1 (Details) - USD ($) $ in Millions	Mar. 31, 2016		Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 73.2		$ 61.6	$ 208.3	$ 66.7
Accounts receivable, net	431.9		410.5
Other current assets	127.0		126.6
Total current assets	632.1		598.7
Property and equipment, net	1,317.7		1,310.1
Goodwill	1,891.9		1,890.1
Intangible assets, net	415.8		419.4
Other long-term assets	205.8		197.0
Total assets	4,608.3	[1]	4,606.1
Current portion of long-term debt	36.6		36.8
Accounts payable	62.7		61.6
Accrued expenses and other current liabilities	364.5		328.0
Total current liabilities	463.8		426.4
Long-term debt, net of current portion	3,079.6		3,134.7
Total Liabilities	3,688.2		$ 3,705.7
Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents	1.6
Accounts receivable, net	28.9
Other current assets	6.4
Total current assets	36.9
Property and equipment, net	126.8
Goodwill	73.5
Intangible assets, net	9.2
Other long-term assets	0.9
Total assets	247.3
Current portion of long-term debt	1.4
Accounts payable	7.5
Accrued expenses and other current liabilities	14.2
Total current liabilities	23.1
Long-term debt, net of current portion	30.9
Total Liabilities	$ 54.0

[1] (1) Our consolidated assets as of March 31, 2016 include total assets of variable interest entities of $247.3 million, which cannot be used by us to settle the obligations of other entities. Our consolidated liabilities as of March 31, 2016 include total liabilities of the variable interest entities of $54.0 million. See Note 3, Variable Interest Entities.