v3.2.0.727
Long-term Debt - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Aggregate outstanding principle $ 2,400,000 $ 900,000
Senior Notes [Member]    
Debt Instrument [Line Items]    
Redemption prices, percent of outstanding principal 101.00%