Debt - Credit Facilities (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Oct. 15, 2013	Sep. 30, 2013	Nov. 20, 2012
Line of Credit Facility [Line Items]
Line of credit facility, maximum aggregate capital expenditures over life of the agreement						$ 626.4
Proceeds from Sale of Equity Method Investments	$ 47.6	$ 170.3	$ 426.0	$ 355.9		$ 643.9	$ 355.9	$ 0.0
Long-Term Debt, Required Principal Payments						0.25%
Proceeds received from Tranche B Term Loan						$ 0.0	0.0	$ 536.0
Issuance of Long-Term Debt, Original Issue Discount					0.75%			0.75%
Loss on extinguishment of debt						20.9	19.6	$ 29.6
Write-off of debt discount	0.0					0.0
Restricted payments, limit when leverage ratio threshold not attained	$ 15.0					$ 15.0
Leverage Ratio, threshold	3.50					3.50
Restricted payments, limit when leverage ratio threshold is attained	$ 45.0					$ 45.0
Leverage Ratio, threshold, other	3.00					3.00
Restricted Payments, Share Repurchases or Dividends, limit	15.00%					15.00%
Restricted Payments, Share Repurchases or Dividends, cap	$ 35.0					$ 35.0
Proceeds from Sale of Equity Method Investment, Percent Required for Mandatory Debt Prepayments	85.00%				100.00%	85.00%		100.00%
Equity Method Investment Sold, Partnership Units		6.0	14.3	16.0
Equity Interests in Foreign Subsidiaries	66.00%					66.00%
Line of Credit Facility, Amount Outstanding	$ 0.0					$ 0.0	0.0
Line of Credit Facility, Remaining Borrowing Capacity	175.0					175.0	150.0
Line of Credit Facility, Commitment Fee Amount						0.9	0.9	$ 1.0
Receivables facility maximum borrowing capacity	120.0					120.0
Receivables facility maximum borrowing availability	114.2					$ 114.2
Accounts Receivable Facility, Renewal Term						364
Receivables facility amount outstanding	17.6					$ 17.6	19.2
Letters of Credit Outstanding, Amount	6.3					6.3
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	175.0			$ 150.0		175.0					$ 200.0
Standby Letters of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	30.0					30.0
Bridge Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 25.0					$ 25.0
Tranche B Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.00%					4.00%
Debt Instrument, Face Amount	$ 522.5					$ 522.5	527.8			$ 540.0
Proceeds received from Tranche B Term Loan								529.8
Tranche B Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate						3.00%
Senior Notes due 2017 [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.25%					8.25%
Debt Instrument, Face Amount									$ 500.0
Debt Instrument, Redemption Price, Percentage					104.125%
Accrued interest									$ 20.6
Receivables Facilities [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Commitment Fee Amount						$ 0.8	$ 0.8	$ 0.7
Debt Instrument, Interest Rate During Period						0.70%
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum						3.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum						4.25%
Debt Instrument, Interest Rate, Stated Percentage	3.75%					3.75%
Debt Instrument, Basis Spread on Variable Rate						1.00%
London Interbank Offered Rate (LIBOR) [Member] | Tranche B Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum						1.00%
Debt Instrument, Basis Spread on Variable Rate						1.00%
London Interbank Offered Rate (LIBOR) [Member] | Receivables Facilities [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate						0.50%
Base Rate [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum						2.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum						3.25%
Debt Instrument, Interest Rate, Stated Percentage	2.75%					2.75%
Base Rate [Member] | Tranche B Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate						2.00%
Federal Funds Rate [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate						0.50%
Federal Funds Rate [Member] | Tranche B Term Loan [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate						0.50%
Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Commitment Fee Percentage						0.50%
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Commitment Fee Percentage						0.625%