Quarterly report pursuant to Section 13 or 15(d)

Debt - Schedule of Long-term Debt Instruments Additional Information (Details)

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Debt - Schedule of Long-term Debt Instruments Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended
Dec. 31, 2012
Mar. 31, 2016
Dec. 31, 2015
Jun. 30, 2015
Senior Secured Revolving Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, term 5 years      
Credit facility, maximum borrowing capacity $ 1,250,000,000 $ 1,750,000,000   $ 1,750,000,000
Credit facility, unused capacity, commitment fee percentage   0.30%    
Credit facility, remaining borrowing capacity   $ 1,150,000,000    
Senior Secured Notes | 5.25% Senior Notes Due 2022        
Debt Instrument [Line Items]        
Stated interest rate   5.25% 5.25%  
Principal amount   $ 400,000,000