Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Supplemental Cash Flow [Line Items]    
Capital expenditures included in current liabilities [1] $ 218.4  
Cash paid for interest, net of interest capitalized amounts 29.7  
Cash paid for income taxes $ 0.0  
Predecessor    
Supplemental Cash Flow [Line Items]    
Capital expenditures included in current liabilities [1]   $ 96.4
Cash paid for interest, net of interest capitalized amounts   55.0
Cash paid for income taxes   $ 48.3
[1] Capital expenditures included in current liabilities is comprised of "Accrued capital expenditures" and certain other amounts included within "Accounts payable" on the Condensed Consolidated and Combined Balance Sheets (unaudited).